updated default proxy config file

1 files changed, 5590 insertions, 1678 deletions

diff --git a/proxy_wizard/scripts/squid.conf.default b/proxy_wizard/scripts/squid.conf.default
index 0b67b709..b7b6648b 100644
--- a/proxy_wizard/scripts/squid.conf.default
+++ b/proxy_wizard/scripts/squid.conf.default
@@ -1,243 +1,2303 @@
+#	WELCOME TO SQUID 3.2.10
+#	----------------------------
+#	
+#	This is the documentation for the Squid configuration file.
+#	This documentation can also be found online at:
+#		http://www.squid-cache.org/Doc/config/
+#	
+#	You may wish to look at the Squid home page and wiki for the
+#	FAQ and other documentation:
+#		http://www.squid-cache.org/
+#		http://wiki.squid-cache.org/SquidFaq
+#		http://wiki.squid-cache.org/ConfigExamples
+#	
+#	This documentation shows what the defaults for various directives
+#	happen to be.  If you don't need to change the default, you should
+#	leave the line out of your squid.conf in most cases.
+#	
+#	In some cases "none" refers to no default setting at all,
+#	while in other cases it refers to the value of the option
+#	- the comments for that keyword indicate if this is the case.
+#
+
+#  Configuration options can be included using the "include" directive.
+#  Include takes a list of files to include. Quoting and wildcards are
+#  supported.
+#
+#  For example,
+#
+#  include /path/to/included/file/squid.acl.config
+#
+#  Includes can be nested up to a hard-coded depth of 16 levels.
+#  This arbitrary restriction is to prevent recursive include references
+#  from causing Squid entering an infinite loop whilst trying to load
+#  configuration files.
+#
+#
+#  Conditional configuration
+#
+#	If-statements can be used to make configuration directives
+#	depend on conditions:
+#
+#	    if <CONDITION>
+#	        ... regular configuration directives ...
+#	    [else
+#	        ... regular configuration directives ...]
+#	    endif
+#
+#	The else part is optional. The keywords "if", "else", and "endif"
+#	must be typed on their own lines, as if they were regular
+#	configuration directives.
+#
+#	NOTE: An else-if condition is not supported.
+#
+#	These individual conditions types are supported:
+#
+#	    true
+#		Always evaluates to true.
+#	    false
+#		Always evaluates to false.
+#	    <integer> = <integer>
+#	        Equality comparison of two integer numbers.
+#
+#
+#  SMP-Related Macros
+#
+#	The following SMP-related preprocessor macros can be used.
+#
+#	${process_name} expands to the current Squid process "name"
+#	(e.g., squid1, squid2, or cache1).
+#
+#	${process_number} expands to the current Squid process
+#	identifier, which is an integer number (e.g., 1, 2, 3) unique
+#	across all Squid processes.
+
+#  TAG: broken_vary_encoding
+#	This option is not yet supported by Squid-3.
+#Default:
+# none
+
+#  TAG: cache_vary
+#	This option is not yet supported by Squid-3.
+#Default:
+# none
+
+#  TAG: collapsed_forwarding
+#	This option is not yet supported by Squid-3. see http://bugs.squid-cache.org/show_bug.cgi?id=3495
+#Default:
+# none
+
+#  TAG: error_map
+#	This option is not yet supported by Squid-3.
+#Default:
+# none
+
+#  TAG: external_refresh_check
+#	This option is not yet supported by Squid-3.
+#Default:
+# none
+
+#  TAG: ignore_ims_on_miss
+#	This option is not yet supported by Squid-3.
+#Default:
+# none
+
+#  TAG: location_rewrite_program
+#	This option is not yet supported by Squid-3.
+#Default:
+# none
+
+#  TAG: refresh_stale_hit
+#	This option is not yet supported by Squid-3.
+#Default:
+# none
+
+#  TAG: storeurl_access
+#	This option is not yet supported by this version of Squid-3. Please try a later release.
+#Default:
+# none
+
+#  TAG: ignore_expect_100
+#	Remove this line. The HTTP/1.1 feature is now fully supported by default.
+#Default:
+# none
+
+#  TAG: dns_v4_fallback
+#	Remove this line. Squid performs a 'Happy Eyeballs' algorithm, the 'fallback' algorithm is no longer relevant.
+#Default:
+# none
+
+#  TAG: ftp_list_width
+#	Remove this line. Configure FTP page display using the CSS controls in errorpages.css instead.
+#Default:
+# none
+
+#  TAG: maximum_single_addr_tries
+#	Replaced by connect_retries. The behaviour has changed, please read the documentation before altering.
+#Default:
+# none
+
+#  TAG: update_headers
+#	Remove this line. The feature is supported by default in storage types where update is implemented.
+#Default:
+# none
+
+#  TAG: url_rewrite_concurrency
+#	Remove this line. Set the 'concurrency=' option of url_rewrite_children instead.
+#Default:
+# none
+
+#  TAG: dns_testnames
+#	Remove this line. DNS is no longer tested on startup.
+#Default:
+# none
+
+#  TAG: extension_methods
+#	Remove this line. All valid methods for HTTP are accepted by default.
+#Default:
+# none
+
+#  TAG: zero_buffers
+#Default:
+# none
+
+#  TAG: incoming_rate
+#Default:
+# none
+
+#  TAG: server_http11
+#	Remove this line. HTTP/1.1 is supported by default.
+#Default:
+# none
+
+#  TAG: upgrade_http0.9
+#	Remove this line. ICY/1.0 streaming protocol is supported by default.
+#Default:
+# none
+
+#  TAG: zph_local
+#	Alter these entries. Use the qos_flows directive instead.
+#Default:
+# none
+
+#  TAG: header_access
+#	Since squid-3.0 replace with request_header_access or reply_header_access
+#	depending on whether you wish to match client requests or server replies.
+#Default:
+# none
+
+#  TAG: httpd_accel_no_pmtu_disc
+#	Since squid-3.0 use the 'disable-pmtu-discovery' flag on http_port instead.
+#Default:
+# none
+
+#  TAG: wais_relay_host
+#	Replace this line with 'cache_peer' configuration.
+#Default:
+# none
+
+#  TAG: wais_relay_port
+#	Replace this line with 'cache_peer' configuration.
+#Default:
+# none
+
+# OPTIONS FOR AUTHENTICATION
+# -----------------------------------------------------------------------------
+
+#  TAG: auth_param
+#	This is used to define parameters for the various authentication
+#	schemes supported by Squid.
+#
+#	format: auth_param scheme parameter [setting]
+#
+#	The order in which authentication schemes are presented to the client is
+#	dependent on the order the scheme first appears in config file. IE
+#	has a bug (it's not RFC 2617 compliant) in that it will use the basic
+#	scheme if basic is the first entry presented, even if more secure
+#	schemes are presented. For now use the order in the recommended
+#	settings section below. If other browsers have difficulties (don't
+#	recognize the schemes offered even if you are using basic) either
+#	put basic first, or disable the other schemes (by commenting out their
+#	program entry).
+#
+#	Once an authentication scheme is fully configured, it can only be
+#	shutdown by shutting squid down and restarting. Changes can be made on
+#	the fly and activated with a reconfigure. I.E. You can change to a
+#	different helper, but not unconfigure the helper completely.
+#
+#	Please note that while this directive defines how Squid processes
+#	authentication it does not automatically activate authentication.
+#	To use authentication you must in addition make use of ACLs based
+#	on login name in http_access (proxy_auth, proxy_auth_regex or
+#	external with %LOGIN used in the format tag). The browser will be
+#	challenged for authentication on the first such acl encountered
+#	in http_access processing and will also be re-challenged for new
+#	login credentials if the request is being denied by a proxy_auth
+#	type acl.
+#
+#	WARNING: authentication can't be used in a transparently intercepting
+#	proxy as the client then thinks it is talking to an origin server and
+#	not the proxy. This is a limitation of bending the TCP/IP protocol to
+#	transparently intercepting port 80, not a limitation in Squid.
+#	Ports flagged 'transparent', 'intercept', or 'tproxy' have
+#	authentication disabled.
+#
+#	=== Parameters for the basic scheme follow. ===
+#
+#	"program" cmdline
+#	Specify the command for the external authenticator.  Such a program
+#	reads a line containing "username password" and replies "OK" or
+#	"ERR" in an endless loop. "ERR" responses may optionally be followed
+#	by a error description available as %m in the returned error page.
+#	If you use an authenticator, make sure you have 1 acl of type
+#	proxy_auth.
+#
+#	By default, the basic authentication scheme is not used unless a
+#	program is specified.
+#
+#	If you want to use the traditional NCSA proxy authentication, set
+#	this line to something like
+#
+#	auth_param basic program /usr/libexec/ncsa_auth /usr/etc/passwd
+#
+#	"utf8" on|off
+#	HTTP uses iso-latin-1 as character set, while some authentication
+#	backends such as LDAP expects UTF-8. If this is set to on Squid will
+#	translate the HTTP iso-latin-1 charset to UTF-8 before sending the
+#	username & password to the helper.
+#
+#	"children" numberofchildren [startup=N] [idle=N] [concurrency=N]
+#	The maximum number of authenticator processes to spawn. If you start too few
+#	Squid will have to wait for them to process a backlog of credential
+#	verifications, slowing it down. When password verifications are
+#	done via a (slow) network you are likely to need lots of
+#	authenticator processes.
+#
+#	The startup= and idle= options permit some skew in the exact amount
+#	run. A minimum of startup=N will begin during startup and reconfigure.
+#	Squid will start more in groups of up to idle=N in an attempt to meet
+#	traffic needs and to keep idle=N free above those traffic needs up to
+#	the maximum.
+#
+#	The concurrency= option sets the number of concurrent requests the
+#	helper can process.  The default of 0 is used for helpers who only
+#	supports one request at a time. Setting this to a number greater than
+#	0 changes the protocol used to include a channel number first on the
+#	request/response line, allowing multiple requests to be sent to the
+#	same helper in parallel without waiting for the response.
+#	Must not be set unless it's known the helper supports this.
+#
+#	auth_param basic children 20 startup=0 idle=1
+#
+#	"realm" realmstring
+#	Specifies the realm name which is to be reported to the
+#	client for the basic proxy authentication scheme (part of
+#	the text the user will see when prompted their username and
+#	password). There is no default.
+#	auth_param basic realm Squid proxy-caching web server
+#
+#	"credentialsttl" timetolive
+#	Specifies how long squid assumes an externally validated
+#	username:password pair is valid for - in other words how
+#	often the helper program is called for that user. Set this
+#	low to force revalidation with short lived passwords.  Note
+#	setting this high does not impact your susceptibility
+#	to replay attacks unless you are using an one-time password
+#	system (such as SecureID).  If you are using such a system,
+#	you will be vulnerable to replay attacks unless you also
+#	use the max_user_ip ACL in an http_access rule.
+#
+#	"casesensitive" on|off
+#	Specifies if usernames are case sensitive. Most user databases are
+#	case insensitive allowing the same username to be spelled using both
+#	lower and upper case letters, but some are case sensitive. This
+#	makes a big difference for user_max_ip ACL processing and similar.
+#	auth_param basic casesensitive off
+#
+#	=== Parameters for the digest scheme follow ===
+#
+#	"program" cmdline
+#	Specify the command for the external authenticator.  Such
+#	a program reads a line containing "username":"realm" and
+#	replies with the appropriate H(A1) value hex encoded or
+#	ERR if the user (or his H(A1) hash) does not exists.
+#	See rfc 2616 for the definition of H(A1).
+#	"ERR" responses may optionally be followed by a error description
+#	available as %m in the returned error page.
+#
+#	By default, the digest authentication scheme is not used unless a
+#	program is specified.
+#
+#	If you want to use a digest authenticator, set this line to
+#	something like
+#
+#	auth_param digest program /usr/bin/digest_pw_auth /usr/etc/digpass
+#
+#	"utf8" on|off
+#	HTTP uses iso-latin-1 as character set, while some authentication
+#	backends such as LDAP expects UTF-8. If this is set to on Squid will
+#	translate the HTTP iso-latin-1 charset to UTF-8 before sending the
+#	username & password to the helper.
+#
+#	"children" numberofchildren [startup=N] [idle=N] [concurrency=N]
+#	The maximum number of authenticator processes to spawn (default 5).
+#	If you start too few Squid will have to wait for them to
+#	process a backlog of H(A1) calculations, slowing it down.
+#	When the H(A1) calculations are done via a (slow) network
+#	you are likely to need lots of authenticator processes.
+#
+#	The startup= and idle= options permit some skew in the exact amount
+#	run. A minimum of startup=N will begin during startup and reconfigure.
+#	Squid will start more in groups of up to idle=N in an attempt to meet
+#	traffic needs and to keep idle=N free above those traffic needs up to
+#	the maximum.
+#
+#	The concurrency= option sets the number of concurrent requests the
+#	helper can process.  The default of 0 is used for helpers who only
+#	supports one request at a time. Setting this to a number greater than
+#	0 changes the protocol used to include a channel number first on the
+#	request/response line, allowing multiple requests to be sent to the
+#	same helper in parallel without waiting for the response.
+#	Must not be set unless it's known the helper supports this.
+#
+#	auth_param digest children 20 startup=0 idle=1
+#
+#	"realm" realmstring
+#	Specifies the realm name which is to be reported to the
+#	client for the digest proxy authentication scheme (part of
+#	the text the user will see when prompted their username and
+#	password). There is no default.
+#	auth_param digest realm Squid proxy-caching web server
+#
+#	"nonce_garbage_interval" timeinterval
+#	Specifies the interval that nonces that have been issued
+#	to client_agent's are checked for validity.
+#
+#	"nonce_max_duration" timeinterval
+#	Specifies the maximum length of time a given nonce will be
+#	valid for.
+#
+#	"nonce_max_count" number
+#	Specifies the maximum number of times a given nonce can be
+#	used.
+#
+#	"nonce_strictness" on|off
+#	Determines if squid requires strict increment-by-1 behavior
+#	for nonce counts, or just incrementing (off - for use when
+#	user agents generate nonce counts that occasionally miss 1
+#	(ie, 1,2,4,6)). Default off.
+#
+#	"check_nonce_count" on|off
+#	This directive if set to off can disable the nonce count check
+#	completely to work around buggy digest qop implementations in
+#	certain mainstream browser versions. Default on to check the
+#	nonce count to protect from authentication replay attacks.
+#
+#	"post_workaround" on|off
+#	This is a workaround to certain buggy browsers who sends
+#	an incorrect request digest in POST requests when reusing
+#	the same nonce as acquired earlier on a GET request.
+#
+#	=== NTLM scheme options follow ===
+#
+#	"program" cmdline
+#	Specify the command for the external NTLM authenticator.
+#	Such a program reads exchanged NTLMSSP packets with
+#	the browser via Squid until authentication is completed.
+#	If you use an NTLM authenticator, make sure you have 1 acl
+#	of type proxy_auth.  By default, the NTLM authenticator_program
+#	is not used.
+#
+#	auth_param ntlm program /usr/bin/ntlm_auth
+#
+#	"children" numberofchildren [startup=N] [idle=N]
+#	The maximum number of authenticator processes to spawn (default 5).
+#	If you start too few Squid will have to wait for them to
+#	process a backlog of credential verifications, slowing it
+#	down. When credential verifications are done via a (slow)
+#	network you are likely to need lots of authenticator
+#	processes.
+#
+#	The startup= and idle= options permit some skew in the exact amount
+#	run. A minimum of startup=N will begin during startup and reconfigure.
+#	Squid will start more in groups of up to idle=N in an attempt to meet
+#	traffic needs and to keep idle=N free above those traffic needs up to
+#	the maximum.
+#
+#	auth_param ntlm children 20 startup=0 idle=1
+#
+#	"keep_alive" on|off
+#	If you experience problems with PUT/POST requests when using the
+#	Negotiate authentication scheme then you can try setting this to
+#	off. This will cause Squid to forcibly close the connection on
+#	the initial requests where the browser asks which schemes are
+#	supported by the proxy.
+#
+#	auth_param ntlm keep_alive on
+#
+#	=== Options for configuring the NEGOTIATE auth-scheme follow ===
+#
+#	"program" cmdline
+#	Specify the command for the external Negotiate authenticator.
+#	This protocol is used in Microsoft Active-Directory enabled setups with
+#	the Microsoft Internet Explorer or Mozilla Firefox browsers.
+#	Its main purpose is to exchange credentials with the Squid proxy
+#	using the Kerberos mechanisms.
+#	If you use a Negotiate authenticator, make sure you have at least
+#	one acl of type proxy_auth active. By default, the negotiate
+#	authenticator_program is not used.
+#	The only supported program for this role is the ntlm_auth
+#	program distributed as part of Samba, version 4 or later.
+#
+#	auth_param negotiate program /usr/bin/ntlm_auth --helper-protocol=gss-spnego
+#
+#	"children" numberofchildren [startup=N] [idle=N]
+#	The maximum number of authenticator processes to spawn (default 5).
+#	If you start too few Squid will have to wait for them to
+#	process a backlog of credential verifications, slowing it
+#	down. When credential verifications are done via a (slow)
+#	network you are likely to need lots of authenticator
+#	processes.
+#
+#	The startup= and idle= options permit some skew in the exact amount
+#	run. A minimum of startup=N will begin during startup and reconfigure.
+#	Squid will start more in groups of up to idle=N in an attempt to meet
+#	traffic needs and to keep idle=N free above those traffic needs up to
+#	the maximum.
+#
+#	auth_param negotiate children 20 startup=0 idle=1
+#
+#	"keep_alive" on|off
+#	If you experience problems with PUT/POST requests when using the
+#	Negotiate authentication scheme then you can try setting this to
+#	off. This will cause Squid to forcibly close the connection on
+#	the initial requests where the browser asks which schemes are
+#	supported by the proxy.
+#
+#	auth_param negotiate keep_alive on
+#
+#	
+#	Examples:
+#
+##Recommended minimum configuration per scheme:
+##auth_param negotiate program <uncomment and complete this line to activate>
+##auth_param negotiate children 20 startup=0 idle=1
+##auth_param negotiate keep_alive on
+##
+##auth_param ntlm program <uncomment and complete this line to activate>
+##auth_param ntlm children 20 startup=0 idle=1
+##auth_param ntlm keep_alive on
+##
+##auth_param digest program <uncomment and complete this line>
+##auth_param digest children 20 startup=0 idle=1
+##auth_param digest realm Squid proxy-caching web server
+##auth_param digest nonce_garbage_interval 5 minutes
+##auth_param digest nonce_max_duration 30 minutes
+##auth_param digest nonce_max_count 50
+##
+##auth_param basic program <uncomment and complete this line>
+##auth_param basic children 5 startup=5 idle=1
+##auth_param basic realm Squid proxy-caching web server
+##auth_param basic credentialsttl 2 hours
+#Default:
+# none
+
+#  TAG: authenticate_cache_garbage_interval
+#	The time period between garbage collection across the username cache.
+#	This is a trade-off between memory utilization (long intervals - say
+#	2 days) and CPU (short intervals - say 1 minute). Only change if you
+#	have good reason to.
+#Default:
+# authenticate_cache_garbage_interval 1 hour
+
+#  TAG: authenticate_ttl
+#	The time a user & their credentials stay in the logged in
+#	user cache since their last request. When the garbage
+#	interval passes, all user credentials that have passed their
+#	TTL are removed from memory.
+#Default:
+# authenticate_ttl 1 hour
+
+#  TAG: authenticate_ip_ttl
+#	If you use proxy authentication and the 'max_user_ip' ACL,
+#	this directive controls how long Squid remembers the IP
+#	addresses associated with each user.  Use a small value
+#	(e.g., 60 seconds) if your users might change addresses
+#	quickly, as is the case with dialup.   You might be safe
+#	using a larger value (e.g., 2 hours) in a corporate LAN
+#	environment with relatively static address assignments.
+#Default:
+# authenticate_ip_ttl 0 seconds
+
+# ACCESS CONTROLS
+# -----------------------------------------------------------------------------
+
+#  TAG: external_acl_type
+#	This option defines external acl classes using a helper program
+#	to look up the status
+#
+#	  external_acl_type name [options] FORMAT.. /path/to/helper [helper arguments..]
+#
+#	Options:
+#
+#	  ttl=n		TTL in seconds for cached results (defaults to 3600
+#	  		for 1 hour)
+#	  negative_ttl=n
+#	  		TTL for cached negative lookups (default same
+#	  		as ttl)
+#	  children-max=n
+#			Maximum number of acl helper processes spawned to service
+#			external acl lookups of this type. (default 20)
+#	  children-startup=n
+#			Minimum number of acl helper processes to spawn during
+#			startup and reconfigure to service external acl lookups
+#			of this type. (default 0)
+#	  children-idle=n
+#			Number of acl helper processes to keep ahead of traffic
+#			loads. Squid will spawn this many at once whenever load
+#			rises above the capabilities of existing processes.
+#			Up to the value of children-max. (default 1)
+#	  concurrency=n	concurrency level per process. Only used with helpers
+#			capable of processing more than one query at a time.
+#	  cache=n	limit the result cache size, default is unbounded.
+#	  grace=n	Percentage remaining of TTL where a refresh of a
+#			cached entry should be initiated without needing to
+#			wait for a new reply. (default is for no grace period)
+#	  protocol=2.5	Compatibility mode for Squid-2.5 external acl helpers
+#	  ipv4 / ipv6	IP protocol used to communicate with this helper.
+#			The default is to auto-detect IPv6 and use it when available.
+#
+#	FORMAT specifications
+#
+#	  %LOGIN	Authenticated user login name
+#	  %EXT_USER	Username from previous external acl
+#	  %EXT_LOG	Log details from previous external acl
+#	  %EXT_TAG	Tag from previous external acl
+#	  %IDENT	Ident user name
+#	  %SRC		Client IP
+#	  %SRCPORT	Client source port
+#	  %URI		Requested URI
+#	  %DST		Requested host
+#	  %PROTO	Requested protocol
+#	  %PORT		Requested port
+#	  %PATH		Requested URL path
+#	  %METHOD	Request method
+#	  %MYADDR	Squid interface address
+#	  %MYPORT	Squid http_port number
+#	  %PATH		Requested URL-path (including query-string if any)
+#	  %USER_CERT	SSL User certificate in PEM format
+#	  %USER_CERTCHAIN SSL User certificate chain in PEM format
+#	  %USER_CERT_xx	SSL User certificate subject attribute xx
+#	  %USER_CA_xx	SSL User certificate issuer attribute xx
+#
+#	  %>{Header}	HTTP request header "Header"
+#	  %>{Hdr:member}
+#	  		HTTP request header "Hdr" list member "member"
+#	  %>{Hdr:;member}
+#	  		HTTP request header list member using ; as
+#	  		list separator. ; can be any non-alphanumeric
+#			character.
+#
+#	  %<{Header}	HTTP reply header "Header"
+#	  %<{Hdr:member}
+#	  		HTTP reply header "Hdr" list member "member"
+#	  %<{Hdr:;member}
+#	  		HTTP reply header list member using ; as
+#	  		list separator. ; can be any non-alphanumeric
+#			character.
+#
+#	  %%		The percent sign. Useful for helpers which need
+#			an unchanging input format.
+#
+#	In addition to the above, any string specified in the referencing
+#	acl will also be included in the helper request line, after the
+#	specified formats (see the "acl external" directive)
+#
+#	The helper receives lines per the above format specification,
+#	and returns lines starting with OK or ERR indicating the validity
+#	of the request and optionally followed by additional keywords with
+#	more details.
+#
+#	General result syntax:
+#
+#	  OK/ERR keyword=value ...
+#
+#	Defined keywords:
+#
+#	  user=		The users name (login)
+#	  password=	The users password (for login= cache_peer option)
+#	  message=	Message describing the reason. Available as %o
+#	  		in error pages
+#	  tag=		Apply a tag to a request (for both ERR and OK results)
+#	  		Only sets a tag, does not alter existing tags.
+#	  log=		String to be logged in access.log. Available as
+#	  		%ea in logformat specifications
+#
+#	If protocol=3.0 (the default) then URL escaping is used to protect
+#	each value in both requests and responses.
+#
+#	If using protocol=2.5 then all values need to be enclosed in quotes
+#	if they may contain whitespace, or the whitespace escaped using \.
+#	And quotes or \ characters within the keyword value must be \ escaped.
+#
+#	When using the concurrency= option the protocol is changed by
+#	introducing a query channel tag infront of the request/response.
+#	The query channel tag is a number between 0 and concurrency-1.
+#Default:
+# none
+
+#  TAG: acl
+#	Defining an Access List
+#
+#	Every access list definition must begin with an aclname and acltype, 
+#	followed by either type-specific arguments or a quoted filename that
+#	they are read from.
+#
+#	   acl aclname acltype argument ...
+#	   acl aclname acltype "file" ...
+#
+#	When using "file", the file should contain one item per line.
+#
+#	By default, regular expressions are CASE-SENSITIVE.
+#	To make them case-insensitive, use the -i option. To return case-sensitive
+#	use the +i option between patterns, or make a new ACL line without -i.
+#
+#	Some acl types require suspending the current request in order
+#	to access some external data source.
+#	Those which do are marked with the tag [slow], those which
+#	don't are marked as [fast].
+#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl
+#	for further information
+#
+#	***** ACL TYPES AVAILABLE *****
+#
+#	acl aclname src ip-address/netmask ...	# clients IP address [fast]
+#	acl aclname src addr1-addr2/netmask ...	# range of addresses [fast]
+#	acl aclname dst ip-address/netmask ...	# URL host's IP address [slow]
+#	acl aclname myip ip-address/netmask ...	# local socket IP address [fast]
+#
+#	acl aclname arp      mac-address ... (xx:xx:xx:xx:xx:xx notation)
+#	  # The arp ACL requires the special configure option --enable-arp-acl.
+#	  # Furthermore, the ARP ACL code is not portable to all operating systems.
+#	  # It works on Linux, Solaris, Windows, FreeBSD, and some
+#	  # other *BSD variants.
+#	  # [fast]
+#	  #
+#	  # NOTE: Squid can only determine the MAC address for clients that are on
+#	  # the same subnet. If the client is on a different subnet,
+#	  # then Squid cannot find out its MAC address.
+#
+#	acl aclname srcdomain   .foo.com ...
+#	  # reverse lookup, from client IP [slow]
+#	acl aclname dstdomain   .foo.com ...
+#	  # Destination server from URL [fast]
+#	acl aclname srcdom_regex [-i] \.foo\.com ...
+#	  # regex matching client name [slow]
+#	acl aclname dstdom_regex [-i] \.foo\.com ...
+#	  # regex matching server [fast]
+#	  #
+#	  # For dstdomain and dstdom_regex a reverse lookup is tried if a IP
+#	  # based URL is used and no match is found. The name "none" is used
+#	  # if the reverse lookup fails.
+#
+#	acl aclname src_as number ...
+#	acl aclname dst_as number ...
+#	  # [fast]
+#	  # Except for access control, AS numbers can be used for
+#	  # routing of requests to specific caches. Here's an
+#	  # example for routing all requests for AS#1241 and only
+#	  # those to mycache.mydomain.net:
+#	  # acl asexample dst_as 1241
+#	  # cache_peer_access mycache.mydomain.net allow asexample
+#	  # cache_peer_access mycache_mydomain.net deny all
+#
+#	acl aclname peername myPeer ...
+#	  # [fast]
+#	  # match against a named cache_peer entry
+#	  # set unique name= on cache_peer lines for reliable use.
+#
+#	acl aclname time [day-abbrevs] [h1:m1-h2:m2]
+#	  # [fast]
+#	  #  day-abbrevs:
+#	  #	S - Sunday
+#	  #	M - Monday
+#	  #	T - Tuesday
+#	  #	W - Wednesday
+#	  #	H - Thursday
+#	  #	F - Friday
+#	  #	A - Saturday
+#	  #  h1:m1 must be less than h2:m2
+#
+#	acl aclname url_regex [-i] ^http:// ...
+#	  # regex matching on whole URL [fast]
+#	acl aclname urllogin [-i] [^a-zA-Z0-9] ...
+#	  # regex matching on URL login field
+#	acl aclname urlpath_regex [-i] \.gif$ ...
+#	  # regex matching on URL path [fast]
+#
+#	acl aclname port 80 70 21 0-1024...   # destination TCP port [fast]
+#	                                      # ranges are alloed
+#	acl aclname myport 3128 ...	          # local socket TCP port [fast]
+#	acl aclname myportname 3128 ...       # http(s)_port name [fast]
+#
+#	acl aclname proto HTTP FTP ...        # request protocol [fast]
+# 
+#	acl aclname method GET POST ...       # HTTP request method [fast]
+#
+#	acl aclname http_status 200 301 500- 400-403 ... 
+#	  # status code in reply [fast]
+#
+#	acl aclname browser [-i] regexp ...
+#	  # pattern match on User-Agent header (see also req_header below) [fast]
+#
+#	acl aclname referer_regex [-i] regexp ...
+#	  # pattern match on Referer header [fast]
+#	  # Referer is highly unreliable, so use with care
+#
+#	acl aclname ident username ...
+#	acl aclname ident_regex [-i] pattern ...
+#	  # string match on ident output [slow]
+#	  # use REQUIRED to accept any non-null ident.
+#
+#	acl aclname proxy_auth [-i] username ...
+#	acl aclname proxy_auth_regex [-i] pattern ...
+#	  # perform http authentication challenge to the client and match against
+#	  # supplied credentials [slow]
+#	  #
+#	  # takes a list of allowed usernames.
+#	  # use REQUIRED to accept any valid username.
+#	  #
+#	  # Will use proxy authentication in forward-proxy scenarios, and plain
+#	  # http authenticaiton in reverse-proxy scenarios
+#	  #
+#	  # NOTE: when a Proxy-Authentication header is sent but it is not
+#	  # needed during ACL checking the username is NOT logged
+#	  # in access.log.
+#	  #
+#	  # NOTE: proxy_auth requires a EXTERNAL authentication program
+#	  # to check username/password combinations (see
+#	  # auth_param directive).
+#	  #
+#	  # NOTE: proxy_auth can't be used in a transparent/intercepting proxy
+#	  # as the browser needs to be configured for using a proxy in order
+#	  # to respond to proxy authentication.
+#
+#	acl aclname snmp_community string ...
+#	  # A community string to limit access to your SNMP Agent [fast]
+#	  # Example:
+#	  #
+#	  #	acl snmppublic snmp_community public
+#
+#	acl aclname maxconn number
+#	  # This will be matched when the client's IP address has
+#	  # more than <number> TCP connections established. [fast]
+#	  # NOTE: This only measures direct TCP links so X-Forwarded-For
+#	  # indirect clients are not counted.
+#
+#	acl aclname max_user_ip [-s] number
+#	  # This will be matched when the user attempts to log in from more
+#	  # than <number> different ip addresses. The authenticate_ip_ttl
+#	  # parameter controls the timeout on the ip entries. [fast]
+#	  # If -s is specified the limit is strict, denying browsing
+#	  # from any further IP addresses until the ttl has expired. Without
+#	  # -s Squid will just annoy the user by "randomly" denying requests.
+#	  # (the counter is reset each time the limit is reached and a
+#	  # request is denied)
+#	  # NOTE: in acceleration mode or where there is mesh of child proxies,
+#	  # clients may appear to come from multiple addresses if they are
+#	  # going through proxy farms, so a limit of 1 may cause user problems.
+#
+#	acl aclname random probability
+#	  # Pseudo-randomly match requests. Based on the probability given.
+#	  # Probability may be written as a decimal (0.333), fraction (1/3)
+#	  # or ratio of matches:non-matches (3:5).
+#
+#	acl aclname req_mime_type [-i] mime-type ...
+#	  # regex match against the mime type of the request generated
+#	  # by the client. Can be used to detect file upload or some
+#	  # types HTTP tunneling requests [fast]
+#	  # NOTE: This does NOT match the reply. You cannot use this
+#	  # to match the returned file type.
+#
+#	acl aclname req_header header-name [-i] any\.regex\.here
+#	  # regex match against any of the known request headers.  May be
+#	  # thought of as a superset of "browser", "referer" and "mime-type"
+#	  # ACL [fast]
+#
+#	acl aclname rep_mime_type [-i] mime-type ...
+#	  # regex match against the mime type of the reply received by
+#	  # squid. Can be used to detect file download or some
+#	  # types HTTP tunneling requests. [fast]
+#	  # NOTE: This has no effect in http_access rules. It only has
+#	  # effect in rules that affect the reply data stream such as
+#	  # http_reply_access.
+#
+#	acl aclname rep_header header-name [-i] any\.regex\.here
+#	  # regex match against any of the known reply headers. May be
+#	  # thought of as a superset of "browser", "referer" and "mime-type"
+#	  # ACLs [fast]
+#
+#	acl aclname external class_name [arguments...]
+#	  # external ACL lookup via a helper class defined by the
+#	  # external_acl_type directive [slow]
+#
+#	acl aclname user_cert attribute values...
+#	  # match against attributes in a user SSL certificate
+#	  # attribute is one of DN/C/O/CN/L/ST [fast]
+#
+#	acl aclname ca_cert attribute values...
+#	  # match against attributes a users issuing CA SSL certificate
+#	  # attribute is one of DN/C/O/CN/L/ST [fast]
+#
+#	acl aclname ext_user username ...
+#	acl aclname ext_user_regex [-i] pattern ...
+#	  # string match on username returned by external acl helper [slow]
+#	  # use REQUIRED to accept any non-null user name.
+#
+#	acl aclname tag tagvalue ...
+#	  # string match on tag returned by external acl helper [slow]
+#
+#	acl aclname hier_code codename ...
+#	  # string match against squid hierarchy code(s); [fast]
+#	  #  e.g., DIRECT, PARENT_HIT, NONE, etc.
+#	  #
+#	  # NOTE: This has no effect in http_access rules. It only has
+#	  # effect in rules that affect the reply data stream such as
+#	  # http_reply_access.
+#
+#	Examples:
+#		acl macaddress arp 09:00:2b:23:45:67
+#		acl myexample dst_as 1241
+#		acl password proxy_auth REQUIRED
+#		acl fileupload req_mime_type -i ^multipart/form-data$
+#		acl javascript rep_mime_type -i ^application/x-javascript$
+#
+#Default:
+# ACLs all, manager, localhost, and to_localhost are predefined.
+#
+#
+# Recommended minimum configuration:
+#
+
+# Example rule allowing access from your local networks.
+# Adapt to list your (internal) IP networks from where browsing
+# should be allowed
+acl localnet src 10.0.0.0/8	# RFC1918 possible internal network
+acl localnet src 172.16.0.0/12	# RFC1918 possible internal network
+acl localnet src 192.168.0.0/16	# RFC1918 possible internal network
+acl localnet src fc00::/7       # RFC 4193 local private network range
+acl localnet src fe80::/10      # RFC 4291 link-local (directly plugged) machines
+
+acl SSL_ports port 443
+acl Safe_ports port 80		# http
+acl Safe_ports port 21		# ftp
+acl Safe_ports port 443		# https
+acl Safe_ports port 70		# gopher
+acl Safe_ports port 210		# wais
+acl Safe_ports port 1025-65535	# unregistered ports
+acl Safe_ports port 280		# http-mgmt
+acl Safe_ports port 488		# gss-http
+acl Safe_ports port 591		# filemaker
+acl Safe_ports port 777		# multiling http
+acl CONNECT method CONNECT
+
+#  TAG: follow_x_forwarded_for
+#	Allowing or Denying the X-Forwarded-For header to be followed to
+#	find the original source of a request.
+#
+#	Requests may pass through a chain of several other proxies
+#	before reaching us.  The X-Forwarded-For header will contain a
+#	comma-separated list of the IP addresses in the chain, with the
+#	rightmost address being the most recent.
+#
+#	If a request reaches us from a source that is allowed by this
+#	configuration item, then we consult the X-Forwarded-For header
+#	to see where that host received the request from.  If the
+#	X-Forwarded-For header contains multiple addresses, we continue
+#	backtracking until we reach an address for which we are not allowed
+#	to follow the X-Forwarded-For header, or until we reach the first
+#	address in the list. For the purpose of ACL used in the
+#	follow_x_forwarded_for directive the src ACL type always matches
+#	the address we are testing and srcdomain matches its rDNS.
+#
+#	The end result of this process is an IP address that we will
+#	refer to as the indirect client address.  This address may
+#	be treated as the client address for access control, ICAP, delay
+#	pools and logging, depending on the acl_uses_indirect_client,
+#	icap_uses_indirect_client, delay_pool_uses_indirect_client, 
+#	log_uses_indirect_client and tproxy_uses_indirect_client options.
+#
+#	This clause only supports fast acl types.
+#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
+#
+#	SECURITY CONSIDERATIONS:
+#
+#		Any host for which we follow the X-Forwarded-For header
+#		can place incorrect information in the header, and Squid
+#		will use the incorrect information as if it were the
+#		source address of the request.  This may enable remote
+#		hosts to bypass any access control restrictions that are
+#		based on the client's source addresses.
+#
+#	For example:
+#
+#		acl localhost src 127.0.0.1
+#		acl my_other_proxy srcdomain .proxy.example.com
+#		follow_x_forwarded_for allow localhost
+#		follow_x_forwarded_for allow my_other_proxy
+#Default:
+# follow_x_forwarded_for deny all
+
+#  TAG: acl_uses_indirect_client	on|off
+#	Controls whether the indirect client address
+#	(see follow_x_forwarded_for) is used instead of the
+#	direct client address in acl matching.
+#
+#	NOTE: maxconn ACL considers direct TCP links and indirect
+#	      clients will always have zero. So no match.
+#Default:
+# acl_uses_indirect_client on
+
+#  TAG: delay_pool_uses_indirect_client	on|off
+#	Controls whether the indirect client address
+#	(see follow_x_forwarded_for) is used instead of the
+#	direct client address in delay pools.
+#Default:
+# delay_pool_uses_indirect_client on
+
+#  TAG: log_uses_indirect_client	on|off
+#	Controls whether the indirect client address
+#	(see follow_x_forwarded_for) is used instead of the
+#	direct client address in the access log.
+#Default:
+# log_uses_indirect_client on
+
+#  TAG: tproxy_uses_indirect_client	on|off
+#	Controls whether the indirect client address
+#	(see follow_x_forwarded_for) is used instead of the
+#	direct client address when spoofing the outgoing client.
+#
+#	This has no effect on requests arriving in non-tproxy
+#	mode ports.
+#
+#	SECURITY WARNING: Usage of this option is dangerous
+#	and should not be used trivially. Correct configuration
+#	of follow_x_forewarded_for with a limited set of trusted
+#	sources is required to prevent abuse of your proxy.
+#Default:
+# tproxy_uses_indirect_client off
+
+#  TAG: http_access
+#	Allowing or Denying access based on defined access lists
+#
+#	Access to the HTTP port:
+#	http_access allow|deny [!]aclname ...
+#
+#	NOTE on default values:
+#
+#	If there are no "access" lines present, the default is to deny
+#	the request.
+#
+#	If none of the "access" lines cause a match, the default is the
+#	opposite of the last line in the list.  If the last line was
+#	deny, the default is allow.  Conversely, if the last line
+#	is allow, the default will be deny.  For these reasons, it is a
+#	good idea to have an "deny all" entry at the end of your access
+#	lists to avoid potential confusion.
+#
+#	This clause supports both fast and slow acl types.
+#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
+#
+#Default:
+# http_access deny all
+#
+
+#
+# Recommended minimum Access Permission configuration:
+#
+# Only allow cachemgr access from localhost
+http_access allow localhost manager
+http_access deny manager
+
+# Deny requests to certain unsafe ports
+http_access deny !Safe_ports
+
+# Deny CONNECT to other than secure SSL ports
+http_access deny CONNECT !SSL_ports
+
+# We strongly recommend the following be uncommented to protect innocent
+# web applications running on the proxy server who think the only
+# one who can access services on "localhost" is a local user
+#http_access deny to_localhost
+
+#
+# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
+#
+
+# Example rule allowing access from your local networks.
+# Adapt localnet in the ACL section to list your (internal) IP networks
+# from where browsing should be allowed
+http_access allow localnet
+http_access allow localhost
+
+# And finally deny all other access to this proxy
+http_access allow localhost
+
+#  TAG: adapted_http_access
+#	Allowing or Denying access based on defined access lists
+#
+#	Essentially identical to http_access, but runs after redirectors
+#	and ICAP/eCAP adaptation. Allowing access control based on their
+#	output.
+#
+#	If not set then only http_access is used.
+#Default:
+# none
 
-#	WELCOME TO SQUID 2
-#	------------------
+#  TAG: http_reply_access
+#	Allow replies to client requests. This is complementary to http_access.
 #
-#	This is the default Squid configuration file. You may wish
-#	to look at the Squid home page (http://www.squid-cache.org/)
-#	for the FAQ and other documentation.
+#	http_reply_access allow|deny [!] aclname ...
 #
-#	The default Squid config file shows what the defaults for
-#	various options happen to be.  If you don't need to change the
-#	default, you shouldn't uncomment the line.  Doing so may cause
-#	run-time problems.  In some cases "none" refers to no default
-#	setting at all, while in other cases it refers to a valid
-#	option - the comments for that keyword indicate if this is the
-#	case.
+#	NOTE: if there are no access lines present, the default is to allow
+#	all replies
 #
+#	If none of the access lines cause a match the opposite of the
+#	last line will apply. Thus it is good practice to end the rules
+#	with an "allow all" or "deny all" entry.
+#
+#	This clause supports both fast and slow acl types.
+#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
+#Default:
+# none
 
+#  TAG: icp_access
+#	Allowing or Denying access to the ICP port based on defined
+#	access lists
+#
+#	icp_access  allow|deny [!]aclname ...
+#
+#	See http_access for details
+#
+#	This clause only supports fast acl types.
+#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
+#
+## Allow ICP queries from local networks only
+##icp_access allow localnet
+##icp_access deny all
+#Default:
+# icp_access deny all
+
+#  TAG: htcp_access
+#	Allowing or Denying access to the HTCP port based on defined
+#	access lists
+#
+#	htcp_access  allow|deny [!]aclname ...
+#
+#	See http_access for details
+#
+#	NOTE: The default if no htcp_access lines are present is to
+#	deny all traffic. This default may cause problems with peers
+#	using the htcp option.
+#
+#	This clause only supports fast acl types.
+#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
+#
+## Allow HTCP queries from local networks only
+##htcp_access allow localnet
+##htcp_access deny all
+#Default:
+# htcp_access deny all
+
+#  TAG: htcp_clr_access
+#	Allowing or Denying access to purge content using HTCP based
+#	on defined access lists
+#
+#	htcp_clr_access  allow|deny [!]aclname ...
+#
+#	See http_access for details
+#
+#	This clause only supports fast acl types.
+#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
+#
+## Allow HTCP CLR requests from trusted peers
+#acl htcp_clr_peer src 172.16.1.2
+#htcp_clr_access allow htcp_clr_peer
+#Default:
+# htcp_clr_access deny all
+
+#  TAG: miss_access
+#	Determins whether network access is permitted when satisfying a request.
+#
+#	For example;
+#	    to force your neighbors to use you as a sibling instead of
+#	    a parent.
+#
+#		acl localclients src 172.16.0.0/16
+#		miss_access allow localclients
+#		miss_access deny  !localclients
+#
+#	This means only your local clients are allowed to fetch relayed/MISS
+#	replies from the network and all other clients can only fetch cached
+#	objects (HITs).
+#
+#
+#	The default for this setting allows all clients who passed the
+#	http_access rules to relay via this proxy.
+#
+#	This clause only supports fast acl types.
+#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
+#Default:
+# none
+
+#  TAG: ident_lookup_access
+# Note: This option is only available if Squid is rebuilt with the
+#       --enable-ident-lookups
+#
+#	A list of ACL elements which, if matched, cause an ident
+#	(RFC 931) lookup to be performed for this request.  For
+#	example, you might choose to always perform ident lookups
+#	for your main multi-user Unix boxes, but not for your Macs
+#	and PCs.  By default, ident lookups are not performed for
+#	any requests.
+#
+#	To enable ident lookups for specific client addresses, you
+#	can follow this example:
+#
+#	acl ident_aware_hosts src 198.168.1.0/24
+#	ident_lookup_access allow ident_aware_hosts
+#	ident_lookup_access deny all
+#
+#	Only src type ACL checks are fully supported.  A srcdomain
+#	ACL might work at times, but it will not always provide
+#	the correct result.
+#
+#	This clause only supports fast acl types.
+#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
+#Default:
+# ident_lookup_access deny all
+
+#  TAG: reply_body_max_size	size [acl acl...]
+#	This option specifies the maximum size of a reply body. It can be
+#	used to prevent users from downloading very large files, such as
+#	MP3's and movies. When the reply headers are received, the
+#	reply_body_max_size lines are processed, and the first line where
+#	all (if any) listed ACLs are true is used as the maximum body size
+#	for this reply.
+#
+#	This size is checked twice. First when we get the reply headers,
+#	we check the content-length value.  If the content length value exists
+#	and is larger than the allowed size, the request is denied and the
+#	user receives an error message that says "the request or reply
+#	is too large." If there is no content-length, and the reply
+#	size exceeds this limit, the client's connection is just closed
+#	and they will receive a partial reply.
+#
+#	WARNING: downstream caches probably can not detect a partial reply
+#	if there is no content-length header, so they will cache
+#	partial responses and give them out as hits.  You should NOT
+#	use this option if you have downstream caches.
+#
+#	WARNING: A maximum size smaller than the size of squid's error messages
+#	will cause an infinite loop and crash squid. Ensure that the smallest
+#	non-zero value you use is greater that the maximum header size plus
+#	the size of your largest error page.
+#
+#	If you set this parameter none (the default), there will be
+#	no limit imposed.
+#
+#	Configuration Format is:
+#		reply_body_max_size SIZE UNITS [acl ...]
+#	ie.
+#		reply_body_max_size 10 MB
+#
+#Default:
+# none
 
 # NETWORK OPTIONS
 # -----------------------------------------------------------------------------
 
 #  TAG: http_port
-#	Usage:	port
-#		hostname:port
-#		1.2.3.4:port
+#	Usage:	port [mode] [options]
+#		hostname:port [mode] [options]
+#		1.2.3.4:port [mode] [options]
 #
 #	The socket addresses where Squid will listen for HTTP client
 #	requests.  You may specify multiple socket addresses.
 #	There are three forms: port alone, hostname with port, and
 #	IP address with port.  If you specify a hostname or IP
-#	address, then Squid binds the socket to that specific
-#	address.  This replaces the old 'tcp_incoming_address'
-#	option.  Most likely, you do not need to bind to a specific
+#	address, Squid binds the socket to that specific
+#	address. Most likely, you do not need to bind to a specific
 #	address, so you can use the port number alone.
 #
-#	The default port number is 3128.
-#
-#	If you are running Squid in accelerator mode, then you
+#	If you are running Squid in accelerator mode, you
 #	probably want to listen on port 80 also, or instead.
 #
-#	The -a command line option will override the *first* port
-#	number listed here.   That option will NOT override an IP
-#	address, however.
+#	The -a command line option may be used to specify additional
+#	port(s) where Squid listens for proxy request. Such ports will
+#	be plain proxy ports with no options.
 #
 #	You may specify multiple socket addresses on multiple lines.
 #
+#	Modes:
+#
+#	   intercept	Support for IP-Layer interception of
+#			outgoing requests without browser settings.
+#			NP: disables authentication and IPv6 on the port.
+#
+#	   tproxy	Support Linux TPROXY for spoofing outgoing
+#			connections using the client IP address.
+#			NP: disables authentication and maybe IPv6 on the port.
+#
+#	   accel	Accelerator / reverse proxy mode
+#
+#	   ssl-bump 	Intercept each CONNECT request matching ssl_bump ACL,
+#			establish secure connection with the client and with
+#			the server, decrypt HTTP messages as they pass through
+#			Squid, and treat them as unencrypted HTTP messages,
+#			becoming the man-in-the-middle.
+#
+#			The ssl_bump option is required to fully enable
+#			the SslBump feature.
+#
+#	Omitting the mode flag causes default forward proxy mode to be used.
+#
+#
+#	Accelerator Mode Options:
+#
+#	   defaultsite=domainname
+#			What to use for the Host: header if it is not present
+#			in a request. Determines what site (not origin server)
+#			accelerators should consider the default.
+#
+#	   no-vhost	Disable using HTTP/1.1 Host header for virtual domain support.
+#
+#	   protocol=	Protocol to reconstruct accelerated requests with.
+#			Defaults to http for http_port and https for
+#			https_port
+#
+#	   vport	Virtual host port support. Using the http_port number
+#			instead of the port passed on Host: headers.
+#
+#	   vport=NN	Virtual host port support. Using the specified port
+#			number instead of the port passed on Host: headers.
+#
+#	   act-as-origin
+#			Act as if this Squid is the origin server.
+#			This currently means generate new Date: and Expires:
+#			headers on HIT instead of adding Age:.
+#
+#	   ignore-cc	Ignore request Cache-Control headers.
+#
+#			WARNING: This option violates HTTP specifications if
+#			used in non-accelerator setups.
+#
+#	   allow-direct	Allow direct forwarding in accelerator mode. Normally
+#			accelerated requests are denied direct forwarding as if
+#			never_direct was used.
+#
+#			WARNING: this option opens accelerator mode to security
+#			vulnerabilities usually only affecting in interception
+#			mode. Make sure to protect forwarding with suitable
+#			http_access rules when using this.
+#
+#
+#	SSL Bump Mode Options:
+#	    In addition to these options ssl-bump requires TLS/SSL options.
+#
+#	   generate-host-certificates[=<on|off>]
+#			Dynamically create SSL server certificates for the
+#			destination hosts of bumped CONNECT requests.When 
+#			enabled, the cert and key options are used to sign
+#			generated certificates. Otherwise generated
+#			certificate will be selfsigned.
+#			If there is a CA certificate lifetime of the generated 
+#			certificate equals lifetime of the CA certificate. If
+#			generated certificate is selfsigned lifetime is three 
+#			years.
+#			This option is enabled by default when ssl-bump is used.
+#			See the ssl-bump option above for more information.
+#			
+#	   dynamic_cert_mem_cache_size=SIZE
+#			Approximate total RAM size spent on cached generated
+#			certificates. If set to zero, caching is disabled. The
+#			default value is 4MB. An average XXX-bit certificate
+#			consumes about XXX bytes of RAM.
+#
+#	TLS / SSL Options:
+#
+#	   cert=	Path to SSL certificate (PEM format).
+#
+#	   key=		Path to SSL private key file (PEM format)
+#			if not specified, the certificate file is
+#			assumed to be a combined certificate and
+#			key file.
+#
+#	   version=	The version of SSL/TLS supported
+#			    1	automatic (default)
+#			    2	SSLv2 only
+#			    3	SSLv3 only
+#			    4	TLSv1.0 only
+#			    5	TLSv1.1 only
+#			    6	TLSv1.2 only
+#
+#	   cipher=	Colon separated list of supported ciphers.
+#			NOTE: some ciphers such as EDH ciphers depend on
+#			      additional settings. If those settings are
+#			      omitted the ciphers may be silently ignored
+#			      by the OpenSSL library.
+#
+#	   options=	Various SSL implementation options. The most important
+#			being:
+#			    NO_SSLv2    Disallow the use of SSLv2
+#			    NO_SSLv3    Disallow the use of SSLv3
+#			    NO_TLSv1    Disallow the use of TLSv1.0
+#			    NO_TLSv1_1  Disallow the use of TLSv1.1
+#			    NO_TLSv1_2  Disallow the use of TLSv1.2
+#			    SINGLE_DH_USE Always create a new key when using
+#				      temporary/ephemeral DH key exchanges
+#			    ALL       Enable various bug workarounds
+#				      suggested as "harmless" by OpenSSL
+#				      Be warned that this reduces SSL/TLS
+#				      strength to some attacks.
+#			See OpenSSL SSL_CTX_set_options documentation for a
+#			complete list of options.
+#
+#	   clientca=	File containing the list of CAs to use when
+#			requesting a client certificate.
+#
+#	   cafile=	File containing additional CA certificates to
+#			use when verifying client certificates. If unset
+#			clientca will be used.
+#
+#	   capath=	Directory containing additional CA certificates
+#			and CRL lists to use when verifying client certificates.
+#
+#	   crlfile=	File of additional CRL lists to use when verifying
+#			the client certificate, in addition to CRLs stored in
+#			the capath. Implies VERIFY_CRL flag below.
+#
+#	   dhparams=	File containing DH parameters for temporary/ephemeral
+#			DH key exchanges. See OpenSSL documentation for details
+#			on how to create this file.
+#			WARNING: EDH ciphers will be silently disabled if this
+#				 option is not set.
+#
+#	   sslflags=	Various flags modifying the use of SSL:
+#			    DELAYED_AUTH
+#				Don't request client certificates
+#				immediately, but wait until acl processing
+#				requires a certificate (not yet implemented).
+#			    NO_DEFAULT_CA
+#				Don't use the default CA lists built in
+#				to OpenSSL.
+#			    NO_SESSION_REUSE
+#				Don't allow for session reuse. Each connection
+#				will result in a new SSL session.
+#			    VERIFY_CRL
+#				Verify CRL lists when accepting client
+#				certificates.
+#			    VERIFY_CRL_ALL
+#				Verify CRL lists for all certificates in the
+#				client certificate chain.
+#
+#	   sslcontext=	SSL session ID context identifier.
+#
+#	Other Options:
+#
+#	   connection-auth[=on|off]
+#	                use connection-auth=off to tell Squid to prevent 
+#	                forwarding Microsoft connection oriented authentication
+#			(NTLM, Negotiate and Kerberos)
+#
+#	   disable-pmtu-discovery=
+#			Control Path-MTU discovery usage:
+#			    off		lets OS decide on what to do (default).
+#			    transparent	disable PMTU discovery when transparent
+#					support is enabled.
+#			    always	disable always PMTU discovery.
+#
+#			In many setups of transparently intercepting proxies
+#			Path-MTU discovery can not work on traffic towards the
+#			clients. This is the case when the intercepting device
+#			does not fully track connections and fails to forward
+#			ICMP must fragment messages to the cache server. If you
+#			have such setup and experience that certain clients
+#			sporadically hang or never complete requests set
+#			disable-pmtu-discovery option to 'transparent'.
+#
+#	   name=	Specifies a internal name for the port. Defaults to
+#			the port specification (port or addr:port)
+#
+#	   tcpkeepalive[=idle,interval,timeout]
+#			Enable TCP keepalive probes of idle connections.
+#			In seconds; idle is the initial time before TCP starts
+#			probing the connection, interval how often to probe, and
+#			timeout the time before giving up.
+#
+#	If you run Squid on a dual-homed machine with an internal
+#	and an external interface we recommend you to specify the
+#	internal address:port in http_port. This way Squid will only be
+#	visible on the internal address.
+#
+#
+
+# Squid normally listens to port 3128
+http_port 3128
+
+#  TAG: https_port
+#	Usage:  [ip:]port cert=certificate.pem [key=key.pem] [mode] [options...]
+#
+#	The socket address where Squid will listen for client requests made
+#	over TLS or SSL connections. Commonly referred to as HTTPS.
+#
+#	This is most useful for situations where you are running squid in
+#	accelerator mode and you want to do the SSL work at the accelerator level.
+#
+#	You may specify multiple socket addresses on multiple lines,
+#	each with their own SSL certificate and/or options.
+#
+#	See http_port for a list of available options.
 #Default:
-# http_port 3128
+# none
 
-#  TAG: icp_port
-#	The port number where Squid sends and receives ICP queries to
-#	and from neighbor caches.  Default is 3130.  To disable use
-#	"0".  May be overridden with -u on the command line.
+#  TAG: tcp_outgoing_tos
+#	Allows you to select a TOS/Diffserv value for packets outgoing
+#	on the server side, based on an ACL.
+#
+#	tcp_outgoing_tos ds-field [!]aclname ...
+#
+#	Example where normal_service_net uses the TOS value 0x00
+#	and good_service_net uses 0x20
+#
+#	acl normal_service_net src 10.0.0.0/24
+#	acl good_service_net src 10.0.1.0/24
+#	tcp_outgoing_tos 0x00 normal_service_net
+#	tcp_outgoing_tos 0x20 good_service_net
+#
+#	TOS/DSCP values really only have local significance - so you should
+#	know what you're specifying. For more information, see RFC2474,
+#	RFC2475, and RFC3260.
 #
+#	The TOS/DSCP byte must be exactly that - a octet value  0 - 255, or
+#	"default" to use whatever default your host has. Note that in
+#	practice often only multiples of 4 is usable as the two rightmost bits
+#	have been redefined for use by ECN (RFC 3168 section 23.1).
+#
+#	Processing proceeds in the order specified, and stops at first fully
+#	matching line.
 #Default:
-# icp_port 3130
+# none
 
-#  TAG: htcp_port
-#	The port number where Squid sends and receives HTCP queries to
-#	and from neighbor caches.  Default is 4827.  To disable use
-#	"0".
+#  TAG: clientside_tos
+#	Allows you to select a TOS/Diffserv value for packets being transmitted
+#	on the client-side, based on an ACL.
+#
+#	clientside_tos ds-field [!]aclname ...
 #
-#	To enable this option, you must use --enable-htcp with the
-#	configure script.
+#	Example where normal_service_net uses the TOS value 0x00
+#	and good_service_net uses 0x20
 #
+#	acl normal_service_net src 10.0.0.0/24
+#	acl good_service_net src 10.0.1.0/24
+#	clientside_tos 0x00 normal_service_net
+#	clientside_tos 0x20 good_service_net
+#
+#	Note: This feature is incompatible with qos_flows. Any TOS values set here
+#	will be overwritten by TOS values in qos_flows.
 #Default:
-# htcp_port 4827
+# none
 
-#  TAG: mcast_groups
-#	This tag specifies a list of multicast groups which your server
-#	should join to receive multicasted ICP queries.
+#  TAG: tcp_outgoing_mark
+# Note: This option is only available if Squid is rebuilt with the
+#       Packet MARK (Linux)
 #
-#	NOTE!  Be very careful what you put here!  Be sure you
-#	understand the difference between an ICP _query_ and an ICP
-#	_reply_.  This option is to be set only if you want to RECEIVE
-#	multicast queries.  Do NOT set this option to SEND multicast
-#	ICP (use cache_peer for that).  ICP replies are always sent via
-#	unicast, so this option does not affect whether or not you will
-#	receive replies from multicast group members.
+#	Allows you to apply a Netfilter mark value to outgoing packets
+#	on the server side, based on an ACL.
 #
-#	You must be very careful to NOT use a multicast address which
-#	is already in use by another group of caches.
+#	tcp_outgoing_mark mark-value [!]aclname ...
 #
-#	If you are unsure about multicast, please read the Multicast
-#	chapter in the Squid FAQ (http://www.squid-cache.org/FAQ/).
+#	Example where normal_service_net uses the mark value 0x00
+#	and good_service_net uses 0x20
 #
-#	Usage: mcast_groups 239.128.16.128 224.0.1.20
+#	acl normal_service_net src 10.0.0.0/24
+#	acl good_service_net src 10.0.1.0/24
+#	tcp_outgoing_mark 0x00 normal_service_net
+#	tcp_outgoing_mark 0x20 good_service_net
+#Default:
+# none
+
+#  TAG: clientside_mark
+# Note: This option is only available if Squid is rebuilt with the
+#       Packet MARK (Linux)
 #
-#	By default, Squid doesn't listen on any multicast groups.
+#	Allows you to apply a Netfilter mark value to packets being transmitted
+#	on the client-side, based on an ACL.
+#
+#	clientside_mark mark-value [!]aclname ...
+#
+#	Example where normal_service_net uses the mark value 0x00
+#	and good_service_net uses 0x20
+#
+#	acl normal_service_net src 10.0.0.0/24
+#	acl good_service_net src 10.0.1.0/24
+#	clientside_mark 0x00 normal_service_net
+#	clientside_mark 0x20 good_service_net
+#
+#	Note: This feature is incompatible with qos_flows. Any mark values set here
+#	will be overwritten by mark values in qos_flows.
+#Default:
+# none
+
+#  TAG: qos_flows
+#	Allows you to select a TOS/DSCP value to mark outgoing
+#	connections with, based on where the reply was sourced.	For
+#	platforms using netfilter, allows you to set a netfilter mark
+#	value instead of, or in addition to, a TOS value.
+#
+#	TOS values really only have local significance - so you should
+#	know what you're specifying. For more information, see RFC2474,
+#	RFC2475, and RFC3260.
+#
+#	The TOS/DSCP byte must be exactly that - a octet value  0 - 255. Note that
+#	in practice often only multiples of 4 is usable as the two rightmost bits
+#	have been redefined for use by ECN (RFC 3168 section 23.1).
+#
+#	Mark values can be any unsigned 32-bit integer value.
+#
+#	This setting is configured by setting the following values:
+#
+#	tos|mark                Whether to set TOS or netfilter mark values
+#
+#	local-hit=0xFF		Value to mark local cache hits.
+#
+#	sibling-hit=0xFF	Value to mark hits from sibling peers.
+#
+#	parent-hit=0xFF		Value to mark hits from parent peers.
+#
+#	miss=0xFF[/mask]	Value to mark cache misses. Takes precedence
+#				over the preserve-miss feature (see below), unless
+#				mask is specified, in which case only the bits
+#				specified in the mask are written.
+#
+#	The TOS variant of the following features are only possible on Linux
+#	and require your kernel to be patched with the TOS preserving ZPH
+#	patch, available from http://zph.bratcheda.org
+#	No patch is needed to preserve the netfilter mark, which will work
+#	with all variants of netfilter.
+#
+#	disable-preserve-miss
+#		This option disables the preservation of the TOS or netfilter
+#		mark. By default, the existing TOS or netfilter mark value of
+#		the response coming from the remote server will be retained
+#		and masked with miss-mark.
+#		NOTE: in the case of a netfilter mark, the mark must be set on
+#		the connection (using the CONNMARK target) not on the packet
+#		(MARK target).
+#
+#	miss-mask=0xFF
+#		Allows you to mask certain bits in the TOS or mark value
+#		received from the remote server, before copying the value to
+#		the TOS sent towards clients.
+#		Default for tos: 0xFF (TOS from server is not changed).
+#		Default for mark: 0xFFFFFFFF (mark from server is not changed).
+#
+#	All of these features require the --enable-zph-qos compilation flag
+#	(enabled by default). Netfilter marking also requires the
+#	libnetfilter_conntrack libraries (--with-netfilter-conntrack) and
+#	libcap 2.09+ (--with-libcap).
 #
 #Default:
 # none
 
 #  TAG: tcp_outgoing_address
-#  TAG: udp_incoming_address
-#  TAG: udp_outgoing_address
-#	Usage: tcp_incoming_address 10.20.30.40
-#	       udp_outgoing_address fully.qualified.domain.name
-#
-#	tcp_outgoing_address	is used for connections made to remote
-#				servers and other caches.
-#	udp_incoming_address	is used for the ICP socket receiving packets
-#				from other caches.
-#	udp_outgoing_address	is used for ICP packets sent out to other
-#				caches.
+#	Allows you to map requests to different outgoing IP addresses
+#	based on the username or source address of the user making
+#	the request.
 #
-#	The default behavior is to not bind to any specific address.
+#	tcp_outgoing_address ipaddr [[!]aclname] ...
 #
-#	A *_incoming_address value of 0.0.0.0 indicates that Squid should
-#	listen on all available interfaces.
+#	For example;
+#		Forwarding clients with dedicated IPs for certain subnets.
 #
-#	If udp_outgoing_address is set to 255.255.255.255 (the default)
-#	then it will use the same socket as udp_incoming_address. Only
-#	change this if you want to have ICP queries sent using another
-#	address than where this Squid listens for ICP queries from other
-#	caches.
+#	  acl normal_service_net src 10.0.0.0/24
+#	  acl good_service_net src 10.0.2.0/24
 #
-#	NOTE, udp_incoming_address and udp_outgoing_address can not
-#	have the same value since they both use port 3130.
+#	  tcp_outgoing_address 2001:db8::c001 good_service_net
+#	  tcp_outgoing_address 10.1.0.2 good_service_net
+#
+#	  tcp_outgoing_address 2001:db8::beef normal_service_net
+#	  tcp_outgoing_address 10.1.0.1 normal_service_net
+#
+#	  tcp_outgoing_address 2001:db8::1
+#	  tcp_outgoing_address 10.1.0.3
 #
-#	NOTE, tcp_incoming_address has been removed.  You can now
-#	specify IP addresses on the 'http_port' line.
+#	Processing proceeds in the order specified, and stops at first fully
+#	matching line.
 #
+#	Squid will add an implicit IP version test to each line.
+#	Requests going to IPv4 websites will use the outgoing 10.1.0.* addresses.
+#	Requests going to IPv6 websites will use the outgoing 2001:db8:* addresses.
+#
+#
+#	NOTE: The use of this directive using client dependent ACLs is
+#	incompatible with the use of server side persistent connections. To
+#	ensure correct results it is best to set server_persistent_connections
+#	to off when using this directive in such configurations.
+#
+#	NOTE: The use of this directive to set a local IP on outgoing TCP links
+#	is incompatible with using TPROXY to set client IP out outbound TCP links.
+#	When needing to contact peers use the no-tproxy cache_peer option and the
+#	client_dst_passthru directive re-enable normal forwarding such as this.
+#
+#Default:
+# none
+
+#  TAG: host_verify_strict
+#	Regardless of this option setting, when dealing with intercepted
+#	traffic, Squid always verifies that the destination IP address matches
+#	the Host header domain or IP (called 'authority form URL').
+#	
+#	This enforcement is performed to satisfy a MUST-level requirement in
+#	RFC 2616 section 14.23: "The Host field value MUST represent the naming
+#	authority of the origin server or gateway given by the original URL".
+#	
+#	When set to ON:
+#		Squid always responds with an HTTP 409 (Conflict) error
+#		page and logs a security warning if there is no match.
+#	
+#		Squid verifies that the destination IP address matches
+#		the Host header for forward-proxy and reverse-proxy traffic
+#		as well. For those traffic types, Squid also enables the
+#		following checks, comparing the corresponding Host header
+#		and Request-URI components:
+#	
+#		 * The host names (domain or IP) must be identical,
+#		   but valueless or missing Host header disables all checks.
+#		   For the two host names to match, both must be either IP
+#		   or FQDN.
+#	
+#		 * Port numbers must be identical, but if a port is missing
+#		   the scheme-default port is assumed.
+#	
+#	
+#	When set to OFF (the default):
+#		Squid allows suspicious requests to continue but logs a
+#		security warning and blocks caching of the response.
+#	
+#		 * Forward-proxy traffic is not checked at all.
+#	
+#		 * Reverse-proxy traffic is not checked at all.
+#	
+#		 * Intercepted traffic which passes verification is handled
+#		   according to client_dst_passthru.
+#	
+#		 * Intercepted requests which fail verification are sent
+#		   to the client original destination instead of DIRECT.
+#		   This overrides 'client_dst_passthru off'.
+#	
+#		For now suspicious intercepted CONNECT requests are always
+#		responded to with an HTTP 409 (Conflict) error page.
+#	
+#	
+#	SECURITY NOTE:
+#	
+#	As described in CVE-2009-0801 when the Host: header alone is used
+#	to determine the destination of a request it becomes trivial for
+#	malicious scripts on remote websites to bypass browser same-origin
+#	security policy and sandboxing protections.
+#	
+#	The cause of this is that such applets are allowed to perform their
+#	own HTTP stack, in which case the same-origin policy of the browser
+#	sandbox only verifies that the applet tries to contact the same IP
+#	as from where it was loaded at the IP level. The Host: header may
+#	be different from the connected IP and approved origin.
+#	
+#Default:
+# host_verify_strict off
+
+#  TAG: client_dst_passthru
+#	With NAT or TPROXY intercepted traffic Squid may pass the request
+#	directly to the original client destination IP or seek a faster
+#	source using the HTTP Host header.
+#	
+#	Using Host to locate alternative servers can provide faster
+#	connectivity with a range of failure recovery options.
+#	But can also lead to connectivity trouble when the client and
+#	server are attempting stateful interactions unaware of the proxy.
+#	
+#	This option (on by default) prevents alternative DNS entries being
+#	located to send intercepted traffic DIRECT to an origin server.
+#	The clients original destination IP and port will be used instead.
+#	
+#	Regardless of this option setting, when dealing with intercepted
+#	traffic Squid will verify the Host: header and any traffic which
+#	fails Host verification will be treated as if this option were ON.
+#	
+#	see host_verify_strict for details on the verification process.
 #Default:
-# tcp_outgoing_address 255.255.255.255
-# udp_incoming_address 0.0.0.0
-# udp_outgoing_address 255.255.255.255
+# client_dst_passthru on
 
+# SSL OPTIONS
+# -----------------------------------------------------------------------------
+
+#  TAG: ssl_unclean_shutdown
+#	Some browsers (especially MSIE) bugs out on SSL shutdown
+#	messages.
+#Default:
+# ssl_unclean_shutdown off
+
+#  TAG: ssl_engine
+#	The OpenSSL engine to use. You will need to set this if you
+#	would like to use hardware SSL acceleration for example.
+#Default:
+# none
+
+#  TAG: sslproxy_client_certificate
+#	Client SSL Certificate to use when proxying https:// URLs
+#Default:
+# none
+
+#  TAG: sslproxy_client_key
+#	Client SSL Key to use when proxying https:// URLs
+#Default:
+# none
+
+#  TAG: sslproxy_version
+#	SSL version level to use when proxying https:// URLs
+#
+#	The versions of SSL/TLS supported:
+#
+#	    1	automatic (default)
+#	    2	SSLv2 only
+#	    3	SSLv3 only
+#	    4	TLSv1.0 only
+#	    5	TLSv1.1 only
+#	    6	TLSv1.2 only
+#Default:
+# sslproxy_version 1
+
+#  TAG: sslproxy_options
+#	SSL implementation options to use when proxying https:// URLs
+#	
+#	The most important being:
+#
+#	    NO_SSLv2    Disallow the use of SSLv2
+#	    NO_SSLv3    Disallow the use of SSLv3
+#	    NO_TLSv1    Disallow the use of TLSv1.0
+#	    NO_TLSv1_1  Disallow the use of TLSv1.1
+#	    NO_TLSv1_2  Disallow the use of TLSv1.2
+#	    SINGLE_DH_USE
+#		      Always create a new key when using temporary/ephemeral
+#		      DH key exchanges
+#	    SSL_OP_NO_TICKET
+#		      Disable use of RFC5077 session tickets. Some servers
+#		      may have problems understanding the TLS extension due
+#		      to ambiguous specification in RFC4507.
+#	    ALL       Enable various bug workarounds suggested as "harmless"
+#		      by OpenSSL. Be warned that this may reduce SSL/TLS
+#		      strength to some attacks.
+#	
+#	See the OpenSSL SSL_CTX_set_options documentation for a
+#	complete list of possible options.
+#Default:
+# none
+
+#  TAG: sslproxy_cipher
+#	SSL cipher list to use when proxying https:// URLs
+#
+#	Colon separated list of supported ciphers.
+#Default:
+# none
+
+#  TAG: sslproxy_cafile
+#	file containing CA certificates to use when verifying server
+#	certificates while proxying https:// URLs
+#Default:
+# none
+
+#  TAG: sslproxy_capath
+#	directory containing CA certificates to use when verifying
+#	server certificates while proxying https:// URLs
+#Default:
+# none
+
+#  TAG: ssl_bump
+#	This ACL controls which CONNECT requests to an http_port
+#	marked with an sslBump flag are actually "bumped". Please 
+#	see the sslBump flag of an http_port option for more details
+#	about decoding proxied SSL connections.
+#
+#	By default, no requests are bumped.
+#
+#	See also: http_port ssl-bump
+#   
+#	This clause supports both fast and slow acl types.
+#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
+#
+#
+#	# Example: Bump all requests except those originating from localhost and 
+#	# those going to webax.com or example.com sites.
+#
+#	acl localhost src 127.0.0.1/32
+#	acl broken_sites dstdomain .webax.com
+#	acl broken_sites dstdomain .example.com
+#	ssl_bump deny localhost
+#	ssl_bump deny broken_sites
+#	ssl_bump allow all
+#Default:
+# none
+
+#  TAG: sslproxy_flags
+#	Various flags modifying the use of SSL while proxying https:// URLs:
+#	    DONT_VERIFY_PEER	Accept certificates that fail verification.
+#				For refined control, see sslproxy_cert_error.
+#	    NO_DEFAULT_CA	Don't use the default CA list built in
+#				to OpenSSL.
+#Default:
+# none
+
+#  TAG: sslproxy_cert_error
+#	Use this ACL to bypass server certificate validation errors.
+#
+#	For example, the following lines will bypass all validation errors
+#	when talking to servers for example.com. All other
+#	validation errors will result in ERR_SECURE_CONNECT_FAIL error.
+#
+#		acl BrokenButTrustedServers dstdomain example.com
+#		sslproxy_cert_error allow BrokenButTrustedServers
+#		sslproxy_cert_error deny all
+#
+#	This clause only supports fast acl types.
+#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
+#	Using slow acl types may result in server crashes
+#
+#	Without this option, all server certificate validation errors
+#	terminate the transaction. Bypassing validation errors is dangerous
+#	because an error usually implies that the server cannot be trusted and
+#	the connection may be insecure.
+#
+#	See also: sslproxy_flags and DONT_VERIFY_PEER.
+#
+#	Default setting:  sslproxy_cert_error deny all
+#Default:
+# none
+
+#  TAG: sslpassword_program
+#	Specify a program used for entering SSL key passphrases
+#	when using encrypted SSL certificate keys. If not specified
+#	keys must either be unencrypted, or Squid started with the -N
+#	option to allow it to query interactively for the passphrase.
+#
+#	The key file name is given as argument to the program allowing
+#	selection of the right password if you have multiple encrypted
+#	keys.
+#Default:
+# none
+
+# OPTIONS RELATING TO EXTERNAL SSL_CRTD 
+# -----------------------------------------------------------------------------
+
+#  TAG: sslcrtd_program
+# Note: This option is only available if Squid is rebuilt with the
+#       --enable-ssl-crtd
+#
+#	Specify the location and options of the executable for ssl_crtd process.
+#	/usr/lib64/squid/ssl_crtd program requires -s and -M parameters
+#	For more information use:
+#		/usr/lib64/squid/ssl_crtd -h
+#Default:
+# sslcrtd_program /usr/lib64/squid/ssl_crtd -s /var/lib/ssl_db -M 4MB
+
+#  TAG: sslcrtd_children
+# Note: This option is only available if Squid is rebuilt with the
+#       --enable-ssl-crtd
+#
+#	The maximum number of processes spawn to service ssl server.
+#	The maximum this may be safely set to is 32.
+#	
+#	The startup= and idle= options allow some measure of skew in your
+#	tuning.
+#	
+#		startup=N
+#	
+#	Sets the minimum number of processes to spawn when Squid
+#	starts or reconfigures. When set to zero the first request will
+#	cause spawning of the first child process to handle it.
+#	
+#	Starting too few children temporary slows Squid under load while it
+#	tries to spawn enough additional processes to cope with traffic.
+#	
+#		idle=N
+#	
+#	Sets a minimum of how many processes Squid is to try and keep available
+#	at all times. When traffic begins to rise above what the existing
+#	processes can handle this many more will be spawned up to the maximum
+#	configured. A minimum setting of 1 is required.
+#	
+#	You must have at least one ssl_crtd process.
+#Default:
+# sslcrtd_children 32 startup=5 idle=1
 
 # OPTIONS WHICH AFFECT THE NEIGHBOR SELECTION ALGORITHM
 # -----------------------------------------------------------------------------
 
 #  TAG: cache_peer
 #	To specify other caches in a hierarchy, use the format:
-#
-#		cache_peer hostname type http_port icp_port
-#
+#	
+#		cache_peer hostname type http-port icp-port [options]
+#	
 #	For example,
-#
+#	
 #	#                                        proxy  icp
 #	#          hostname             type     port   port  options
 #	#          -------------------- -------- ----- -----  -----------
-#	cache_peer parent.foo.net       parent    3128  3130  [proxy-only]
-#	cache_peer sib1.foo.net         sibling   3128  3130  [proxy-only]
-#	cache_peer sib2.foo.net         sibling   3128  3130  [proxy-only]
-#
-#	      type:  either 'parent', 'sibling', or 'multicast'.
-#
-#	proxy_port:  The port number where the cache listens for proxy
-#		     requests.
-#
-#	  icp_port:  Used for querying neighbor caches about
-#		     objects.  To have a non-ICP neighbor
-#		     specify '7' for the ICP port and make sure the
-#		     neighbor machine has the UDP echo port
-#		     enabled in its /etc/inetd.conf file.
-#
-#	    options: proxy-only
-#		     weight=n
-#		     ttl=n
-#		     no-query
-#		     default
-#		     round-robin
-#		     multicast-responder
-#		     closest-only
-#		     no-digest
-#		     no-netdb-exchange
-#		     no-delay
-#		     login=user:password
-#		     connect-timeout=nn
-#		     digest-url=url
-#		     allow-miss
-#
-#		     use 'proxy-only' to specify that objects fetched
-#		     from this cache should not be saved locally.
-#
-#		     use 'weight=n' to specify a weighted parent.
-#		     The weight must be an integer.  The default weight
-#		     is 1, larger weights are favored more.
-#
-#		     use 'ttl=n' to specify a IP multicast TTL to use
-#		     when sending an ICP queries to this address.
-#		     Only useful when sending to a multicast group.
-#		     Because we don't accept ICP replies from random
-#		     hosts, you must configure other group members as
-#		     peers with the 'multicast-responder' option below.
-#
-#		     use 'no-query' to NOT send ICP queries to this
-#		     neighbor.
-#
-#		     use 'default' if this is a parent cache which can
-#		     be used as a "last-resort." You should probably
-#		     only use 'default' in situations where you cannot
-#		     use ICP with your parent cache(s).
-#
-#		     use 'round-robin' to define a set of parents which
-#		     should be used in a round-robin fashion in the
-#		     absence of any ICP queries.
-#
-#		     'multicast-responder' indicates that the named peer
-#		     is a member of a multicast group.  ICP queries will
-#		     not be sent directly to the peer, but ICP replies
-#		     will be accepted from it.
-#
-#		     'closest-only' indicates that, for ICP_OP_MISS
-#		     replies, we'll only forward CLOSEST_PARENT_MISSes
-#		     and never FIRST_PARENT_MISSes.
-#
-#		     use 'no-digest' to NOT request cache digests from
-#		     this neighbor.
-#
-#		     'no-netdb-exchange' disables requesting ICMP
-#		     RTT database (NetDB) from the neighbor.
-#
-#		     use 'no-delay' to prevent access to this neighbor
-#		     from influencing the delay pools.
-#
-#		     use 'login=user:password' if this is a personal/workgroup
-#		     proxy and your parent requires proxy authentication.
-#
-#		     use 'connect-timeout=nn' to specify a peer
-#		     specific connect timeout (also see the
-#		     peer_connect_timeout directive)
-#
-#		     use 'digest-url=url' to tell Squid to fetch the cache
-#		     digest (if digests are enabled) for this host from
-#		     the specified URL rather than the Squid default
-#		     location.
-#
-#		     use 'allow-miss' to disable Squid's use of only-if-cached
-#		     when forwarding requests to siblings. This is primarily
-#		     useful when icp_hit_stale is used by the sibling. To
-#		     extensive use of this option may result in forwarding
-#		     loops, and you should avoid having two-way peerings
-#		     with this option. (for example to deny peer usage on
-#		     requests from peer by denying cache_peer_access if the
-#		     source is a peer)
-#
-#	NOTE: non-ICP neighbors must be specified as 'parent'.
-#
+#	cache_peer parent.foo.net       parent    3128  3130  default
+#	cache_peer sib1.foo.net         sibling   3128  3130  proxy-only
+#	cache_peer sib2.foo.net         sibling   3128  3130  proxy-only
+#	cache_peer example.com          parent    80       0  default
+#	cache_peer cdn.example.com      sibling   3128     0  
+#	
+#	      type:	either 'parent', 'sibling', or 'multicast'.
+#	
+#	proxy-port:	The port number where the peer accept HTTP requests.
+#			For other Squid proxies this is usually 3128
+#			For web servers this is usually 80
+#	
+#	  icp-port:	Used for querying neighbor caches about objects.
+#			Set to 0 if the peer does not support ICP or HTCP.
+#			See ICP and HTCP options below for additional details.
+#	
+#	
+#	==== ICP OPTIONS ====
+#	
+#	You MUST also set icp_port and icp_access explicitly when using these options.
+#	The defaults will prevent peer traffic using ICP.
+#	
+#	
+#	no-query	Disable ICP queries to this neighbor.
+#	
+#	multicast-responder
+#			Indicates the named peer is a member of a multicast group.
+#			ICP queries will not be sent directly to the peer, but ICP
+#			replies will be accepted from it.
+#	
+#	closest-only	Indicates that, for ICP_OP_MISS replies, we'll only forward
+#			CLOSEST_PARENT_MISSes and never FIRST_PARENT_MISSes.
+#	
+#	background-ping
+#			To only send ICP queries to this neighbor infrequently.
+#			This is used to keep the neighbor round trip time updated
+#			and is usually used in conjunction with weighted-round-robin.
+#	
+#	
+#	==== HTCP OPTIONS ====
+#	
+#	You MUST also set htcp_port and htcp_access explicitly when using these options.
+#	The defaults will prevent peer traffic using HTCP.
+#	
+#	
+#	htcp		Send HTCP, instead of ICP, queries to the neighbor.
+#			You probably also want to set the "icp-port" to 4827
+#			instead of 3130. This directive accepts a comma separated
+#			list of options described below.
+#	
+#	htcp=oldsquid	Send HTCP to old Squid versions (2.5 or earlier).
+#	
+#	htcp=no-clr	Send HTCP to the neighbor but without
+#			sending any CLR requests.  This cannot be used with
+#			only-clr.
+#	
+#	htcp=only-clr	Send HTCP to the neighbor but ONLY CLR requests.
+#			This cannot be used with no-clr.
+#	
+#	htcp=no-purge-clr
+#			Send HTCP to the neighbor including CLRs but only when
+#			they do not result from PURGE requests.
+#	
+#	htcp=forward-clr
+#			Forward any HTCP CLR requests this proxy receives to the peer.
+#	
+#	
+#	==== PEER SELECTION METHODS ====
+#	
+#	The default peer selection method is ICP, with the first responding peer
+#	being used as source. These options can be used for better load balancing.
+#	
+#	
+#	default		This is a parent cache which can be used as a "last-resort"
+#			if a peer cannot be located by any of the peer-selection methods.
+#			If specified more than once, only the first is used.
+#	
+#	round-robin	Load-Balance parents which should be used in a round-robin
+#			fashion in the absence of any ICP queries.
+#			weight=N can be used to add bias.
+#	
+#	weighted-round-robin
+#			Load-Balance parents which should be used in a round-robin
+#			fashion with the frequency of each parent being based on the
+#			round trip time. Closer parents are used more often.
+#			Usually used for background-ping parents.
+#			weight=N can be used to add bias.
+#	
+#	carp		Load-Balance parents which should be used as a CARP array.
+#			The requests will be distributed among the parents based on the
+#			CARP load balancing hash function based on their weight.
+#	
+#	userhash	Load-balance parents based on the client proxy_auth or ident username.
+#	
+#	sourcehash	Load-balance parents based on the client source IP.
+#
+#	multicast-siblings
+#			To be used only for cache peers of type "multicast".
+#			ALL members of this multicast group have "sibling"
+#			relationship with it, not "parent".  This is to a multicast
+#			group when the requested object would be fetched only from
+#			a "parent" cache, anyway.  It's useful, e.g., when
+#			configuring a pool of redundant Squid proxies, being
+#			members of the same multicast group.
+#	
+#	
+#	==== PEER SELECTION OPTIONS ====
+#	
+#	weight=N	use to affect the selection of a peer during any weighted
+#			peer-selection mechanisms.
+#			The weight must be an integer; default is 1,
+#			larger weights are favored more.
+#			This option does not affect parent selection if a peering
+#			protocol is not in use.
+#	
+#	basetime=N	Specify a base amount to be subtracted from round trip
+#			times of parents.
+#			It is subtracted before division by weight in calculating
+#			which parent to fectch from. If the rtt is less than the
+#			base time the rtt is set to a minimal value.
+#	
+#	ttl=N		Specify a TTL to use when sending multicast ICP queries
+#			to this address.
+#			Only useful when sending to a multicast group.
+#			Because we don't accept ICP replies from random
+#			hosts, you must configure other group members as
+#			peers with the 'multicast-responder' option.
+#	
+#	no-delay	To prevent access to this neighbor from influencing the
+#			delay pools.
+#	
+#	digest-url=URL	Tell Squid to fetch the cache digest (if digests are
+#			enabled) for this host from the specified URL rather
+#			than the Squid default location.
+#	
+#	
+#	==== CARP OPTIONS ====
+#	
+#	carp-key=key-specification
+#			use a different key than the full URL to hash against the peer.
+#			the key-specification is a comma-separated list of the keywords			
+#			scheme, host, port, path, params
+#			Order is not important.
+#	
+#	==== ACCELERATOR / REVERSE-PROXY OPTIONS ====
+#	
+#	originserver	Causes this parent to be contacted as an origin server.
+#			Meant to be used in accelerator setups when the peer
+#			is a web server.
+#	
+#	forceddomain=name
+#			Set the Host header of requests forwarded to this peer.
+#			Useful in accelerator setups where the server (peer)
+#			expects a certain domain name but clients may request
+#			others. ie example.com or www.example.com
+#	
+#	no-digest	Disable request of cache digests.
+#	
+#	no-netdb-exchange
+#			Disables requesting ICMP RTT database (NetDB).
+#	
+#	
+#	==== AUTHENTICATION OPTIONS ====
+#	
+#	login=user:password
+#			If this is a personal/workgroup proxy and your parent
+#			requires proxy authentication.
+#			
+#			Note: The string can include URL escapes (i.e. %20 for
+#			spaces). This also means % must be written as %%.
+#	
+#	login=PASSTHRU
+#			Send login details received from client to this peer.
+#			Both Proxy- and WWW-Authorization headers are passed
+#			without alteration to the peer.
+#			Authentication is not required by Squid for this to work.
+#			
+#			Note: This will pass any form of authentication but
+#			only Basic auth will work through a proxy unless the
+#			connection-auth options are also used.
+#
+#	login=PASS	Send login details received from client to this peer.
+#			Authentication is not required by this option.
+#			
+#			If there are no client-provided authentication headers
+#			to pass on, but username and password are available
+#			from an external ACL user= and password= result tags
+#			they may be sent instead.
+#			
+#			Note: To combine this with proxy_auth both proxies must
+#			share the same user database as HTTP only allows for
+#			a single login (one for proxy, one for origin server).
+#			Also be warned this will expose your users proxy
+#			password to the peer. USE WITH CAUTION
+#	
+#	login=*:password
+#			Send the username to the upstream cache, but with a
+#			fixed password. This is meant to be used when the peer
+#			is in another administrative domain, but it is still
+#			needed to identify each user.
+#			The star can optionally be followed by some extra
+#			information which is added to the username. This can
+#			be used to identify this proxy to the peer, similar to
+#			the login=username:password option above.
+#	
+#	login=NEGOTIATE
+#			If this is a personal/workgroup proxy and your parent
+#			requires a secure proxy authentication.
+#			The first principal from the default keytab or defined by
+#			the environment variable KRB5_KTNAME will be used. 
+#	
+#			WARNING: The connection may transmit requests from multiple
+#			clients. Negotiate often assumes end-to-end authentication
+#			and a single-client. Which is not strictly true here.
+#	
+#	login=NEGOTIATE:principal_name
+#			If this is a personal/workgroup proxy and your parent
+#			requires a secure proxy authentication. 
+#			The principal principal_name from the default keytab or
+#			defined by the environment variable KRB5_KTNAME will be
+#			used.
+#	
+#			WARNING: The connection may transmit requests from multiple
+#			clients. Negotiate often assumes end-to-end authentication
+#			and a single-client. Which is not strictly true here.
+#	
+#	connection-auth=on|off
+#			Tell Squid that this peer does or not support Microsoft
+#			connection oriented authentication, and any such
+#			challenges received from there should be ignored.
+#			Default is auto to automatically determine the status
+#			of the peer.
+#	
+#	
+#	==== SSL / HTTPS / TLS OPTIONS ====
+#	
+#	ssl		Encrypt connections to this peer with SSL/TLS.
+#	
+#	sslcert=/path/to/ssl/certificate
+#			A client SSL certificate to use when connecting to
+#			this peer.
+#	
+#	sslkey=/path/to/ssl/key
+#			The private SSL key corresponding to sslcert above.
+#			If 'sslkey' is not specified 'sslcert' is assumed to
+#			reference a combined file containing both the
+#			certificate and the key.
+#	
+#	sslversion=1|2|3|4|5|6
+#			The SSL version to use when connecting to this peer
+#				1 = automatic (default)
+#				2 = SSL v2 only
+#				3 = SSL v3 only
+#				4 = TLS v1.0 only
+#				5 = TLS v1.1 only
+#				6 = TLS v1.2 only
+#	
+#	sslcipher=...	The list of valid SSL ciphers to use when connecting
+#			to this peer.
+#	
+#	ssloptions=... 	Specify various SSL implementation options:
+#
+#			    NO_SSLv2    Disallow the use of SSLv2
+#			    NO_SSLv3    Disallow the use of SSLv3
+#			    NO_TLSv1    Disallow the use of TLSv1.0
+#			    NO_TLSv1_1  Disallow the use of TLSv1.1
+#			    NO_TLSv1_2  Disallow the use of TLSv1.2
+#			    SINGLE_DH_USE
+#				      Always create a new key when using
+#				      temporary/ephemeral DH key exchanges
+#			    ALL       Enable various bug workarounds
+#				      suggested as "harmless" by OpenSSL
+#				      Be warned that this reduces SSL/TLS
+#				      strength to some attacks.
+#
+#			See the OpenSSL SSL_CTX_set_options documentation for a
+#			more complete list.
+#	
+#	sslcafile=... 	A file containing additional CA certificates to use
+#			when verifying the peer certificate.
+#	
+#	sslcapath=...	A directory containing additional CA certificates to
+#			use when verifying the peer certificate.
+#	
+#	sslcrlfile=... 	A certificate revocation list file to use when
+#			verifying the peer certificate.
+#	
+#	sslflags=...	Specify various flags modifying the SSL implementation:
+#	
+#			DONT_VERIFY_PEER
+#				Accept certificates even if they fail to
+#				verify.
+#			NO_DEFAULT_CA
+#				Don't use the default CA list built in
+#				to OpenSSL.
+#			DONT_VERIFY_DOMAIN
+#				Don't verify the peer certificate
+#				matches the server name
+#	
+#	ssldomain= 	The peer name as advertised in it's certificate.
+#			Used for verifying the correctness of the received peer
+#			certificate. If not specified the peer hostname will be
+#			used.
+#	
+#	front-end-https
+#			Enable the "Front-End-Https: On" header needed when
+#			using Squid as a SSL frontend in front of Microsoft OWA.
+#			See MS KB document Q307347 for details on this header.
+#			If set to auto the header will only be added if the
+#			request is forwarded as a https:// URL.
+#	
+#	
+#	==== GENERAL OPTIONS ====
+#	
+#	connect-timeout=N
+#			A peer-specific connect timeout.
+#			Also see the peer_connect_timeout directive.
+#	
+#	connect-fail-limit=N
+#			How many times connecting to a peer must fail before
+#			it is marked as down. Default is 10.
+#	
+#	allow-miss	Disable Squid's use of only-if-cached when forwarding
+#			requests to siblings. This is primarily useful when
+#			icp_hit_stale is used by the sibling. To extensive use
+#			of this option may result in forwarding loops, and you
+#			should avoid having two-way peerings with this option.
+#			For example to deny peer usage on requests from peer
+#			by denying cache_peer_access if the source is a peer.
+#	
+#	max-conn=N	Limit the amount of connections Squid may open to this
+#			peer. see also 
+#	
+#	name=xxx	Unique name for the peer.
+#			Required if you have multiple peers on the same host
+#			but different ports.
+#			This name can be used in cache_peer_access and similar
+#			directives to dentify the peer.
+#			Can be used by outgoing access controls through the
+#			peername ACL type.
+#	
+#	no-tproxy	Do not use the client-spoof TPROXY support when forwarding
+#			requests to this peer. Use normal address selection instead.
+#	
+#	proxy-only	objects fetched from the peer will not be stored locally.
+#	
 #Default:
 # none
 
@@ -255,7 +2315,7 @@
 #	has the effect such that UDP query packets are sent to
 #	'bigserver' only when the requested object exists on a
 #	server in the .edu domain.  Prefixing the domainname
-#	with '!' means that the cache will be queried for objects
+#	with '!' means the cache will be queried for objects
 #	NOT in that domain.
 #
 #	NOTE:	* Any number of domains may be given for a cache-host,
@@ -267,62 +2327,38 @@
 #		* There are no defaults.
 #		* There is also a 'cache_peer_access' tag in the ACL
 #		  section.
+#Default:
+# none
+
+#  TAG: cache_peer_access
+#	Similar to 'cache_peer_domain' but provides more flexibility by
+#	using ACL elements.
+#
+#	cache_peer_access cache-host allow|deny [!]aclname ...
 #
+#	The syntax is identical to 'http_access' and the other lists of
+#	ACL elements.  See the comments for 'http_access' below, or
+#	the Squid FAQ (http://wiki.squid-cache.org/SquidFaq/SquidAcl).
 #Default:
 # none
 
 #  TAG: neighbor_type_domain
-#	usage: neighbor_type_domain parent|sibling domain domain ...
+#	usage: neighbor_type_domain neighbor parent|sibling domain domain ...
 #
 #	Modifying the neighbor type for specific domains is now
-#	possible.  You can treat some domains differently than the the
+#	possible.  You can treat some domains differently than the
 #	default neighbor type specified on the 'cache_peer' line.
 #	Normally it should only be necessary to list domains which
 #	should be treated differently because the default neighbor type
 #	applies for hostnames which do not match domains listed here.
 #
 #EXAMPLE:
-#	cache_peer  parent cache.foo.org 3128 3130
+#	cache_peer cache.foo.org parent 3128 3130
 #	neighbor_type_domain cache.foo.org sibling .com .net
 #	neighbor_type_domain cache.foo.org sibling .au .de
-#
 #Default:
 # none
 
-#  TAG: icp_query_timeout	(msec)
-#	Normally Squid will automatically determine an optimal ICP
-#	query timeout value based on the round-trip-time of recent ICP
-#	queries.  If you want to override the value determined by
-#	Squid, set this 'icp_query_timeout' to a non-zero value.  This
-#	value is specified in MILLISECONDS, so, to use a 2-second
-#	timeout (the old default), you would write:
-#
-#		icp_query_timeout 2000
-#
-#Default:
-# icp_query_timeout 0
-
-#  TAG: maximum_icp_query_timeout	(msec)
-#	Normally the ICP query timeout is determined dynamically.  But
-#	sometimes it can lead to very large values (say 5 seconds).
-#	Use this option to put an upper limit on the dynamic timeout
-#	value.  Do NOT use this option to always use a fixed (instead
-#	of a dynamic) timeout value. To set a fixed timeout see the
-#	'icp_query_timeout' directive.
-#
-#Default:
-# maximum_icp_query_timeout 2000
-
-#  TAG: mcast_icp_query_timeout	(msec)
-#	For Multicast peers, Squid regularly sends out ICP "probes" to
-#	count how many other peers are listening on the given multicast
-#	address.  This value specifies how long Squid should wait to
-#	count all the replies.  The default is 2000 msec, or 2
-#	seconds.
-#
-#Default:
-# mcast_icp_query_timeout 2000
-
 #  TAG: dead_peer_timeout	(seconds)
 #	This controls how long Squid waits to declare a peer cache
 #	as "dead."  If there are no ICP replies received in this
@@ -338,41 +2374,39 @@
 #	your time between requests is greater than this timeout, you
 #	will see a lot of requests sent DIRECT to origin servers
 #	instead of to your parents.
-#
 #Default:
 # dead_peer_timeout 10 seconds
 
+#  TAG: forward_max_tries
+#	Controls how many different forward paths Squid will try
+#	before giving up. See also forward_timeout.
+#	
+#	NOTE: connect_retries (default: none) can make each of these
+#	possible forwarding paths be tried multiple times.
+#Default:
+# forward_max_tries 10
+
 #  TAG: hierarchy_stoplist
 #	A list of words which, if found in a URL, cause the object to
 #	be handled directly by this cache.  In other words, use this
 #	to not query neighbor caches for certain objects.  You may
 #	list this option multiple times.
 #
-#We recommend you to use at least the following line.
-hierarchy_stoplist cgi-bin ?
-
-#  TAG: no_cache
-#	A list of ACL elements which, if matched, cause the reply to
-#	immediately removed from the cache.  In other words, use this
-#	to force certain objects to never be cached.
-#
-#	You must use the word 'DENY' to indicate the ACL names which should
-#	NOT be cached.
+#	Example:
+#		hierarchy_stoplist cgi-bin ?
 #
-#We recommend you to use the following two lines.
-acl QUERY urlpath_regex cgi-bin \?
-no_cache deny QUERY
-
+#	Note: never_direct overrides this option.
+#Default:
+# none
 
-# OPTIONS WHICH AFFECT THE CACHE SIZE
+# MEMORY CACHE OPTIONS
 # -----------------------------------------------------------------------------
 
 #  TAG: cache_mem	(bytes)
-#	NOTE: THIS PARAMETER DOES NOT SPECIFY THE MAXIMUM PROCESS
-#	SIZE.  IT PLACES A LIMIT ON ONE ASPECT OF SQUID'S MEMORY
-#	USAGE.  SQUID USES MEMORY FOR OTHER THINGS AS WELL.
-#	YOUR PROCESS WILL PROBABLY BECOME TWICE OR THREE TIMES
-#	BIGGER THAN THE VALUE YOU PUT HERE 
+#	NOTE: THIS PARAMETER DOES NOT SPECIFY THE MAXIMUM PROCESS SIZE.
+#	IT ONLY PLACES A LIMIT ON HOW MUCH ADDITIONAL MEMORY SQUID WILL
+#	USE AS A MEMORY CACHE OF OBJECTS. SQUID USES MEMORY FOR OTHER
+#	THINGS AS WELL. SEE THE SQUID FAQ SECTION 8 FOR DETAILS.
 #
 #	'cache_mem' specifies the ideal amount of memory to be used
 #	for:
@@ -399,74 +2433,67 @@ no_cache deny QUERY
 #	reached.  Thereafter, blocks will be used to store hot
 #	objects.
 #
+#	If shared memory caching is enabled, Squid does not use the shared
+#	cache space for in-transit objects, but they still consume as much
+#	local memory as they need. For more details about the shared memory
+#	cache, see memory_cache_shared.
 #Default:
-# cache_mem 8 MB
+# cache_mem 256 MB
 
-#  TAG: cache_swap_low	(percent, 0-100)
-#  TAG: cache_swap_high	(percent, 0-100)
-#
-#	The low- and high-water marks for cache object replacement.
-#	Replacement begins when the swap (disk) usage is above the
-#	low-water mark and attempts to maintain utilization near the
-#	low-water mark.  As swap utilization gets close to high-water
-#	mark object eviction becomes more aggressive.  If utilization is
-#	close to the low-water mark less replacement is done each time.
-#	
-#	Defaults are 90% and 95%. If you have a large cache, 5% could be
-#	hundreds of MB. If this is the case you may wish to set these
-#	numbers closer together.
-#
+#  TAG: maximum_object_size_in_memory	(bytes)
+#	Objects greater than this size will not be attempted to kept in
+#	the memory cache. This should be set high enough to keep objects
+#	accessed frequently in memory to improve performance whilst low
+#	enough to keep larger objects from hoarding cache_mem.
 #Default:
-# cache_swap_low 90
-# cache_swap_high 95
+# maximum_object_size_in_memory 512 KB
 
-#  TAG: maximum_object_size	(bytes)
-#	Objects larger than this size will NOT be saved on disk.  The
-#	value is specified in kilobytes, and the default is 4MB.  If
-#	you wish to get a high BYTES hit ratio, you should probably
-#	increase this (one 32 MB object hit counts for 3200 10KB
-#	hits).  If you wish to increase speed more than your want to
-#	save bandwidth you should leave this low.
+#  TAG: memory_cache_shared	on|off
+#	Controls whether the memory cache is shared among SMP workers.
 #
-#	NOTE: if using the LFUDA replacement policy you should increase
-#	this value to maximize the byte hit rate improvement of LFUDA!
-#	See replacement_policy below for a discussion of this policy.
+#	The shared memory cache is meant to occupy cache_mem bytes and replace
+#	the non-shared memory cache, although some entities may still be
+#	cached locally by workers for now (e.g., internal and in-transit
+#	objects may be served from a local memory cache even if shared memory
+#	caching is enabled).
 #
-#Default:
-# maximum_object_size 4096 KB
-
-#  TAG: minimum_object_size	(bytes)
-#	Objects smaller than this size will NOT be saved on disk.  The
-#	value is specified in kilobytes, and the default is 0 KB, which
-#	means there is no minimum.
+#	By default, the memory cache is shared if and only if all of the
+#	following conditions are satisfied: Squid runs in SMP mode with
+#	multiple workers, cache_mem is positive, and Squid environment
+#	supports required IPC primitives (e.g., POSIX shared memory segments
+#	and GCC-style atomic operations).
 #
-#Default:
-# minimum_object_size 0 KB
-
-#  TAG: maximum_object_size_in_memory	(bytes)
-#        Objects greater than this size will not be attempted to kept in
-#        the memory cache. This should be set high enough to keep objects
-#        accessed frequently in memory to improve performance whilst low
-#        enough to keep larger objects from hoarding cache_mem .
+#	To avoid blocking locks, shared memory uses opportunistic algorithms
+#	that do not guarantee that every cachable entity that could have been
+#	shared among SMP workers will actually be shared.
 #
+#	Currently, entities exceeding 32KB in size cannot be shared.
 #Default:
-# maximum_object_size_in_memory 8 KB
+# "on" where supported if doing memory caching with multiple SMP workers.
 
-#  TAG: ipcache_size	(number of entries)
-#  TAG: ipcache_low	(percent)
-#  TAG: ipcache_high	(percent)
-#	The size, low-, and high-water marks for the IP cache.
+#  TAG: memory_cache_mode
+#	Controls which objects to keep in the memory cache (cache_mem)
+#
+#	always	Keep most recently fetched objects in memory (default)
 #
+#	disk	Only disk cache hits are kept in memory, which means
+#		an object must first be cached on disk and then hit
+#		a second time before cached in memory.
+#
+#	network	Only objects fetched from network is kept in memory
 #Default:
-# ipcache_size 1024
-# ipcache_low 90
-# ipcache_high 95
+# memory_cache_mode always
 
-#  TAG: fqdncache_size	(number of entries)
-#	Maximum number of FQDN cache entries.
+#  TAG: memory_replacement_policy
+#	The memory replacement policy parameter determines which
+#	objects are purged from memory when memory space is needed.
 #
+#	See cache_replacement_policy for details.
 #Default:
-# fqdncache_size 1024
+# memory_replacement_policy lru
+
+# DISK CACHE OPTIONS
+# -----------------------------------------------------------------------------
 
 #  TAG: cache_replacement_policy
 #	The cache replacement policy parameter determines which
@@ -496,49 +2523,37 @@ no_cache deny QUERY
 #	replacement policies.
 #
 #	NOTE: if using the LFUDA replacement policy you should increase
-#	the value of maximum_object_size above its default of 4096 KB to
-#	to maximize the potential byte hit rate improvement of LFUDA.  
+#	the value of maximum_object_size above its default of 4 MB to
+#	to maximize the potential byte hit rate improvement of LFUDA.
 #
 #	For more information about the GDSF and LFUDA cache replacement
 #	policies see http://www.hpl.hp.com/techreports/1999/HPL-1999-69.html
 #	and http://fog.hpl.external.hp.com/techreports/98/HPL-98-173.html.
-#
 #Default:
 # cache_replacement_policy lru
 
-#  TAG: memory_replacement_policy
-#	The memory replacement policy parameter determines which
-#	objects are purged from memory when memory space is needed.
-#
-#	See cache_replacement_policy for details.
-#
-#Default:
-# memory_replacement_policy lru
-
-
-# LOGFILE PATHNAMES AND CACHE DIRECTORIES
-# -----------------------------------------------------------------------------
-
 #  TAG: cache_dir
 #	Usage:
-#	
+#
 #	cache_dir Type Directory-Name Fs-specific-data [options]
 #
 #	You can specify multiple cache_dir lines to spread the
 #	cache among different disk partitions.
 #
-#	Type specifies the kind of storage system to use.  Most
-#	everyone will want to use "ufs" as the type.  If you are using
-#	Async I/O (--enable async-io) on Linux or Solaris, then you may
-#	want to try "aufs" as the type.  Async IO support may be
-#	buggy, however, so beware.
+#	Type specifies the kind of storage system to use. Only "ufs"
+#	is built by default. To enable any of the other storage systems
+#	see the --enable-storeio configure option.
 #
 #	'Directory' is a top-level directory where cache swap
 #	files will be stored.  If you want to use an entire disk
-#	for caching, then this can be the mount-point directory.
+#	for caching, this can be the mount-point directory.
 #	The directory must exist and be writable by the Squid
 #	process.  Squid will NOT create this directory for you.
 #
+#	In SMP configurations, cache_dir must not precede the workers option
+#	and should use configuration macros or conditionals to give each
+#	worker interested in disk caching a dedicated cache directory.
+#
 #	The ufs store type:
 #
 #	"ufs" is the old well-known Squid storage format that has always
@@ -548,12 +2563,14 @@ no_cache deny QUERY
 #
 #	'Mbytes' is the amount of disk space (MB) to use under this
 #	directory.  The default is 100 MB.  Change this to suit your
-#	configuration.
+#	configuration.  Do NOT put the size of your disk drive here.
+#	Instead, if you want Squid to use the entire disk drive,
+#	subtract 20% and use that value.
 #
-#	'Level-1' is the number of first-level subdirectories which
+#	'L1' is the number of first-level subdirectories which
 #	will be created under the 'Directory'.  The default is 16.
 #
-#	'Level-2' is the number of second-level subdirectories which
+#	'L2' is the number of second-level subdirectories which
 #	will be created under each first-level directory.  The default
 #	is 256.
 #
@@ -583,62 +2600,539 @@ no_cache deny QUERY
 #
 #	Q2 specifies the number of unacknowledged messages when Squid
 #	starts blocking.  If this many messages are in the queues,
-#	Squid blocks until it recevies some replies. Default is 72
+#	Squid blocks until it receives some replies. Default is 72
+#
+#	When Q1 < Q2 (the default), the cache directory is optimized
+#	for lower response time at the expense of a decrease in hit
+#	ratio.  If Q1 > Q2, the cache directory is optimized for
+#	higher hit ratio at the expense of an increase in response
+#	time.
+#
+#	The rock store type:
+#
+#	    cache_dir rock Directory-Name Mbytes <max-size=bytes> [options]
+#
+#	The Rock Store type is a database-style storage. All cached
+#	entries are stored in a "database" file, using fixed-size slots,
+#	one entry per slot. The database size is specified in MB. The
+#	slot size is specified in bytes using the max-size option. See
+#	below for more info on the max-size option.
+#
+#	If possible, Squid using Rock Store creates a dedicated kid
+#	process called "disker" to avoid blocking Squid worker(s) on disk
+#	I/O. One disker kid is created for each rock cache_dir.  Diskers
+#	are created only when Squid, running in daemon mode, has support
+#	for the IpcIo disk I/O module.
+#
+#	swap-timeout=msec: Squid will not start writing a miss to or
+#	reading a hit from disk if it estimates that the swap operation
+#	will take more than the specified number of milliseconds. By
+#	default and when set to zero, disables the disk I/O time limit
+#	enforcement. Ignored when using blocking I/O module because
+#	blocking synchronous I/O does not allow Squid to estimate the
+#	expected swap wait time.
+#
+#	max-swap-rate=swaps/sec: Artificially limits disk access using
+#	the specified I/O rate limit. Swap out requests that
+#	would cause the average I/O rate to exceed the limit are
+#	delayed. Individual swap in requests (i.e., hits or reads) are
+#	not delayed, but they do contribute to measured swap rate and
+#	since they are placed in the same FIFO queue as swap out
+#	requests, they may wait longer if max-swap-rate is smaller.
+#	This is necessary on file systems that buffer "too
+#	many" writes and then start blocking Squid and other processes
+#	while committing those writes to disk.  Usually used together
+#	with swap-timeout to avoid excessive delays and queue overflows
+#	when disk demand exceeds available disk "bandwidth". By default
+#	and when set to zero, disables the disk I/O rate limit
+#	enforcement. Currently supported by IpcIo module only.
+#
+#
+#	The coss store type:
+#
+#	NP: COSS filesystem in Squid-3 has been deemed too unstable for
+#	    production use and has thus been removed from this release.
+#	    We hope that it can be made usable again soon.
+#
+#	block-size=n defines the "block size" for COSS cache_dir's.
+#	Squid uses file numbers as block numbers.  Since file numbers
+#	are limited to 24 bits, the block size determines the maximum
+#	size of the COSS partition.  The default is 512 bytes, which
+#	leads to a maximum cache_dir size of 512<<24, or 8 GB.  Note
+#	you should not change the coss block size after Squid
+#	has written some objects to the cache_dir.
+#
+#	The coss file store has changed from 2.5. Now it uses a file
+#	called 'stripe' in the directory names in the config - and
+#	this will be created by squid -z.
 #
 #	Common options:
 #
-#	read-only, this cache_dir is read only.
+#	no-store, no new objects should be stored to this cache_dir
+#
+#	min-size=n, refers to the min object size in bytes this cache_dir
+#	will accept.  It's used to restrict a cache_dir to only store
+#	large objects (e.g. aufs) while other storedirs are optimized
+#	for smaller objects (e.g. COSS). Defaults to 0.
 #
-#	max-size=n, refers to the max object size this storedir supports.
-#	It is used to initially choose the storedir to dump the object.
+#	max-size=n, refers to the max object size in bytes this cache_dir
+#	supports.  It is used to select the cache_dir to store the object.
 #	Note: To make optimal use of the max-size limits you should order
 #	the cache_dir lines with the smallest max-size value first and the
 #	ones with no max-size specification last.
 #
+#	Note for coss, max-size must be less than COSS_MEMBUF_SZ,
+#	which can be changed with the --with-coss-membuf-size=N configure
+#	option.
+#
+
+# Uncomment and adjust the following to add a disk cache directory.
+#cache_dir ufs /var/spool/squid 100 16 256
+
+#  TAG: store_dir_select_algorithm
+#	Set this to 'round-robin' as an alternative.
+#Default:
+# store_dir_select_algorithm least-load
+
+#  TAG: max_open_disk_fds
+#	To avoid having disk as the I/O bottleneck Squid can optionally
+#	bypass the on-disk cache if more than this amount of disk file
+#	descriptors are open.
+#
+#	A value of 0 indicates no limit.
 #Default:
-# cache_dir ufs /var/spool/squid 100 16 256
+# max_open_disk_fds 0
 
-#  TAG: cache_access_log
-#	Logs the client request activity.  Contains an entry for
-#	every HTTP and ICP queries received.
+#  TAG: minimum_object_size	(bytes)
+#	Objects smaller than this size will NOT be saved on disk.  The
+#	value is specified in kilobytes, and the default is 0 KB, which
+#	means there is no minimum.
+#Default:
+# minimum_object_size 0 KB
+
+#  TAG: maximum_object_size	(bytes)
+#	The default limit on size of objects stored to disk.
+#	This size is used for cache_dir where max-size is not set.
+#	The value is specified in bytes, and the default is 4 MB.
+#
+#	If you wish to get a high BYTES hit ratio, you should probably
+#	increase this (one 32 MB object hit counts for 3200 10KB
+#	hits).
+#
+#	If you wish to increase hit ratio more than you want to
+#	save bandwidth you should leave this low.
 #
+#	NOTE: if using the LFUDA replacement policy you should increase
+#	this value to maximize the byte hit rate improvement of LFUDA!
+#	See replacement_policy below for a discussion of this policy.
 #Default:
-# cache_access_log /var/log/squid/access.log
+# maximum_object_size 4 MB
 
-#  TAG: cache_log
-#	Cache logging file. This is where general information about
-#	your cache's behavior goes. You can increase the amount of data
-#	logged to this file with the "debug_options" tag below.
+#  TAG: cache_swap_low	(percent, 0-100)
+#Default:
+# cache_swap_low 90
+
+#  TAG: cache_swap_high	(percent, 0-100)
 #
+#	The low- and high-water marks for cache object replacement.
+#	Replacement begins when the swap (disk) usage is above the
+#	low-water mark and attempts to maintain utilization near the
+#	low-water mark.  As swap utilization gets close to high-water
+#	mark object eviction becomes more aggressive.  If utilization is
+#	close to the low-water mark less replacement is done each time.
+#
+#	Defaults are 90% and 95%. If you have a large cache, 5% could be
+#	hundreds of MB. If this is the case you may wish to set these
+#	numbers closer together.
 #Default:
-# cache_log /var/log/squid/cache.log
+# cache_swap_high 95
+
+# LOGFILE OPTIONS
+# -----------------------------------------------------------------------------
+
+#  TAG: logformat
+#	Usage:
+#
+#	logformat <name> <format specification>
+#
+#	Defines an access log format.
+#
+#	The <format specification> is a string with embedded % format codes
+#
+#	% format codes all follow the same basic structure where all but
+#	the formatcode is optional. Output strings are automatically escaped
+#	as required according to their context and the output format
+#	modifiers are usually not needed, but can be specified if an explicit
+#	output format is desired.
+#
+#		% ["|[|'|#] [-] [[0]width] [{argument}] formatcode
+#
+#		"	output in quoted string format
+#		[	output in squid text log format as used by log_mime_hdrs
+#		#	output in URL quoted format
+#		'	output as-is
+#
+#		-	left aligned
+#
+#		width	minimum and/or maximum field width:
+#			    [width_min][.width_max]
+#			When minimum starts with 0, the field is zero-padded.
+#			String values exceeding maximum width are truncated.
+#
+#		{arg}	argument such as header name etc
+#
+#	Format codes:
+#
+#		%	a literal % character
+#		sn	Unique sequence number per log line entry
+#		err_code    The ID of an error response served by Squid or
+#				a similar internal error identifier.
+#		err_detail  Additional err_code-dependent error information.
+#
+#	Connection related format codes:
+#
+#		>a	Client source IP address
+#		>A	Client FQDN
+#		>p	Client source port
+#		>eui	Client source EUI (MAC address, EUI-48 or EUI-64 identifier)
+#		>la	Local IP address the client connected to
+#		>lp	Local port number the client connected to
+#
+#		la	Local listening IP address the client connection was connected to.
+#		lp	Local listening port number the client connection was connected to.
+#
+#		<a	Server IP address of the last server or peer connection
+#		<A	Server FQDN or peer name
+#		<p	Server port number of the last server or peer connection
+#		<la	Local IP address of the last server or peer connection
+#		<lp     Local port number of the last server or peer connection
+#
+#	Time related format codes:
+#
+#		ts	Seconds since epoch
+#		tu	subsecond time (milliseconds)
+#		tl	Local time. Optional strftime format argument
+#				default %d/%b/%Y:%H:%M:%S %z
+#		tg	GMT time. Optional strftime format argument
+#				default %d/%b/%Y:%H:%M:%S %z
+#		tr	Response time (milliseconds)
+#		dt	Total time spent making DNS lookups (milliseconds)
+#
+#	Access Control related format codes:
+#
+#		et	Tag returned by external acl
+#		ea	Log string returned by external acl
+#		un	User name (any available)
+#		ul	User name from authentication
+#		ue	User name from external acl helper
+#		ui	User name from ident
+#		us	User name from SSL
+#
+#	HTTP related format codes:
+#
+#		[http::]>h	Original request header. Optional header name argument
+#				on the format header[:[separator]element]
+#		[http::]>ha	The HTTP request headers after adaptation and redirection. 
+#				Optional header name argument as for >h
+#		[http::]<h	Reply header. Optional header name argument
+#				as for >h
+#		[http::]>Hs	HTTP status code sent to the client
+#		[http::]<Hs	HTTP status code received from the next hop
+#		[http::]<bs	Number of HTTP-equivalent message body bytes 
+#				received from the next hop, excluding chunked
+#				transfer encoding and control messages.
+#				Generated FTP/Gopher listings are treated as
+#				received bodies.
+#		[http::]mt	MIME content type
+#		[http::]rm	Request method (GET/POST etc)
+#		[http::]>rm	Request method from client
+#		[http::]<rm	Request method sent to server or peer
+#		[http::]ru	Request URL from client (historic, filtered for logging)
+#		[http::]>ru	Request URL from client
+#		[http::]<ru	Request URL sent to server or peer
+#		[http::]rp	Request URL-Path excluding hostname
+#		[http::]>rp	Request URL-Path excluding hostname from client
+#		[http::]<rp	Request URL-Path excluding hostname sento to server or peer
+#		[http::]rv	Request protocol version
+#		[http::]>rv	Request protocol version from client
+#		[http::]<rv	Request protocol version sent to server or peer
+#		[http::]<st	Sent reply size including HTTP headers
+#		[http::]>st	Received request size including HTTP headers. In the
+#				case of chunked requests the chunked encoding metadata
+#				are not included
+#		[http::]>sh	Received HTTP request headers size
+#		[http::]<sh	Sent HTTP reply headers size
+#		[http::]st	Request+Reply size including HTTP headers
+#		[http::]<sH	Reply high offset sent
+#		[http::]<sS	Upstream object size
+#		[http::]<pt	Peer response time in milliseconds. The timer starts
+#				when the last request byte is sent to the next hop
+#				and stops when the last response byte is received.
+#		[http::]<tt	Total server-side time in milliseconds. The timer 
+#				starts with the first connect request (or write I/O)
+#				sent to the first selected peer. The timer stops
+#				with the last I/O with the last peer.
+#
+#	Squid handling related format codes:
+#
+#		Ss	Squid request status (TCP_MISS etc)
+#		Sh	Squid hierarchy status (DEFAULT_PARENT etc)
+#
+#	If ICAP is enabled, the following code becomes available (as
+#	well as ICAP log codes documented with the icap_log option):
+#
+#		icap::tt        Total ICAP processing time for the HTTP
+#				transaction. The timer ticks when ICAP
+#				ACLs are checked and when ICAP
+#				transaction is in progress.
+#
+#	If adaptation is enabled the following three codes become available:
+#
+#		adapt::<last_h	The header of the last ICAP response or
+#				meta-information from the last eCAP
+#				transaction related to the HTTP transaction.
+#				Like <h, accepts an optional header name
+#				argument.
+#
+#		adapt::sum_trs Summed adaptation transaction response
+#				times recorded as a comma-separated list in
+#				the order of transaction start time. Each time
+#				value is recorded as an integer number,
+#				representing response time of one or more
+#				adaptation (ICAP or eCAP) transaction in
+#				milliseconds.  When a failed transaction is
+#				being retried or repeated, its time is not
+#				logged individually but added to the
+#				replacement (next) transaction. See also:
+#				adapt::all_trs.
+#
+#		adapt::all_trs All adaptation transaction response times.
+#				Same as adaptation_strs but response times of
+#				individual transactions are never added
+#				together. Instead, all transaction response
+#				times are recorded individually.
+#
+#	You can prefix adapt::*_trs format codes with adaptation
+#	service name in curly braces to record response time(s) specific
+#	to that service. For example: %{my_service}adapt::sum_trs
+#
+#	The default formats available (which do not need re-defining) are:
+#
+#logformat squid      %ts.%03tu %6tr %>a %Ss/%03>Hs %<st %rm %ru %[un %Sh/%<a %mt
+#logformat common     %>a %[ui %[un [%tl] "%rm %ru HTTP/%rv" %>Hs %<st %Ss:%Sh
+#logformat combined   %>a %[ui %[un [%tl] "%rm %ru HTTP/%rv" %>Hs %<st "%{Referer}>h" "%{User-Agent}>h" %Ss:%Sh
+#logformat referrer   %ts.%03tu %>a %{Referer}>h %ru
+#logformat useragent  %>a [%tl] "%{User-Agent}>h"
+#
+#	NOTE: When the log_mime_hdrs directive is set to ON.
+#		The squid, common and combined formats have a safely encoded copy
+#		of the mime headers appended to each line within a pair of brackets.
+#
+#	NOTE: The common and combined formats are not quite true to the Apache definition.
+#		The logs from Squid contain an extra status and hierarchy code appended.
+#
+#Default:
+# none
+
+#  TAG: access_log
+#	These files log client request activities. Has a line every HTTP or
+#	ICP request. The format is:
+#	access_log <module>:<place> [<logformat name> [acl acl ...]]
+#	access_log none [acl acl ...]]
+#	
+#	Will log to the specified module:place using the specified format (which
+#	must be defined in a logformat directive) those entries which match
+#	ALL the acl's specified (which must be defined in acl clauses).
+#	If no acl is specified, all requests will be logged to this destination.
+#	
+#	===== Modules Currently available =====
+#	
+#	none	Do not log any requests matching these ACL.
+#		Do not specify Place or logformat name.
+#	
+#	stdio	Write each log line to disk immediately at the completion of
+#		each request.
+#		Place: the filename and path to be written.
+#	
+#	daemon	Very similar to stdio. But instead of writing to disk the log
+#		line is passed to a daemon helper for asychronous handling instead.
+#		Place: varies depending on the daemon.
+#		
+#		log_file_daemon Place: the file name and path to be written.
+#	
+#	syslog	To log each request via syslog facility.
+#		Place: The syslog facility and priority level for these entries.
+#		Place Format:  facility.priority
+#
+#		where facility could be any of:
+#			authpriv, daemon, local0 ... local7 or user.
+#
+#		And priority could be any of:
+#			err, warning, notice, info, debug.
+#	
+#	udp	To send each log line as text data to a UDP receiver.
+#		Place: The destination host name or IP and port.
+#		Place Format:   //host:port
+#
+#	tcp	To send each log line as text data to a TCP receiver.
+#		Place: The destination host name or IP and port.
+#		Place Format:   //host:port
+#
+#	Default:
+#		access_log daemon:/var/log/squid/access.log squid
+#Default:
+# access_log daemon:/var/log/squid/access.log squid
+
+#  TAG: icap_log
+#	ICAP log files record ICAP transaction summaries, one line per
+#	transaction.
+#
+#	The icap_log option format is:
+#	icap_log <filepath> [<logformat name> [acl acl ...]]
+#	icap_log none [acl acl ...]]
+#	
+#	Please see access_log option documentation for details. The two
+#	kinds of logs share the overall configuration approach and many
+#	features.
+#
+#	ICAP processing of a single HTTP message or transaction may
+#	require multiple ICAP transactions.  In such cases, multiple
+#	ICAP transaction log lines will correspond to a single access
+#	log line.
+#
+#	ICAP log uses logformat codes that make sense for an ICAP
+#	transaction. Header-related codes are applied to the HTTP header
+#	embedded in an ICAP server response, with the following caveats:
+#	For REQMOD, there is no HTTP response header unless the ICAP
+#	server performed request satisfaction. For RESPMOD, the HTTP
+#	request header is the header sent to the ICAP server. For
+#	OPTIONS, there are no HTTP headers.
+#
+#	The following format codes are also available for ICAP logs:
+#
+#		icap::<A	ICAP server IP address. Similar to <A.
+#
+#		icap::<service_name	ICAP service name from the icap_service
+#				option in Squid configuration file.
+#
+#		icap::ru	ICAP Request-URI. Similar to ru.
+#
+#		icap::rm	ICAP request method (REQMOD, RESPMOD, or 
+#				OPTIONS). Similar to existing rm.
+#
+#		icap::>st	Bytes sent to the ICAP server (TCP payload
+#				only; i.e., what Squid writes to the socket).
+#
+#		icap::<st	Bytes received from the ICAP server (TCP
+#				payload only; i.e., what Squid reads from
+#				the socket).
+#
+#		icap::<bs	Number of message body bytes received from the
+#				ICAP server. ICAP message body, if any, usually
+#				includes encapsulated HTTP message headers and
+#				possibly encapsulated HTTP message body. The
+#				HTTP body part is dechunked before its size is
+#				computed.
+#
+#		icap::tr 	Transaction response time (in
+#				milliseconds).  The timer starts when
+#				the ICAP transaction is created and
+#				stops when the transaction is completed.
+#				Similar to tr.
+#
+#		icap::tio	Transaction I/O time (in milliseconds). The
+#				timer starts when the first ICAP request
+#				byte is scheduled for sending. The timers
+#				stops when the last byte of the ICAP response
+#				is received.
+#
+#		icap::to 	Transaction outcome: ICAP_ERR* for all
+#				transaction errors, ICAP_OPT for OPTION
+#				transactions, ICAP_ECHO for 204
+#				responses, ICAP_MOD for message
+#				modification, and ICAP_SAT for request
+#				satisfaction. Similar to Ss.
+#
+#		icap::Hs	ICAP response status code. Similar to Hs.
+#
+#		icap::>h	ICAP request header(s). Similar to >h.
+#
+#		icap::<h	ICAP response header(s). Similar to <h.
+#
+#	The default ICAP log format, which can be used without an explicit
+#	definition, is called icap_squid:
+#
+#logformat icap_squid %ts.%03tu %6icap::tr %>a %icap::to/%03icap::Hs %icap::<size %icap::rm %icap::ru% %un -/%icap::<A -
+#
+#	See also: logformat, log_icap, and %adapt::<last_h 
+#Default:
+# none
+
+#  TAG: logfile_daemon
+#	Specify the path to the logfile-writing daemon. This daemon is
+#	used to write the access and store logs, if configured.
+#
+#	Squid sends a number of commands to the log daemon:
+#	  L<data>\n - logfile data
+#	  R\n - rotate file
+#	  T\n - truncate file
+#	  O\n - reopen file
+#	  F\n - flush file
+#	  r<n>\n - set rotate count to <n>
+#	  b<n>\n - 1 = buffer output, 0 = don't buffer output
+#
+#	No responses is expected.
+#Default:
+# logfile_daemon /usr/lib64/squid/log_file_daemon
+
+#  TAG: log_access	allow|deny acl acl...
+#	This options allows you to control which requests gets logged
+#	to access.log (see access_log directive). Requests denied for
+#	logging will also not be accounted for in performance counters.
+#
+#	This clause only supports fast acl types.
+#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
+#Default:
+# none
+
+#  TAG: log_icap
+#	This options allows you to control which requests get logged
+#	to icap.log. See the icap_log directive for ICAP log details.
+#Default:
+# none
 
 #  TAG: cache_store_log
 #	Logs the activities of the storage manager.  Shows which
 #	objects are ejected from the cache, and which objects are
-#	saved and for how long.  To disable, enter "none". There are
-#	not really utilities to analyze this data, so you can safely
-#	disable it.
-#
+#	saved and for how long.
+#	There are not really utilities to analyze this data, so you can safely
+#	disable it (the default).
+#	
+#	Store log uses modular logging outputs. See access_log for the list
+#	of modules supported.
+#	
+#	Example:
+#		cache_store_log stdio:/var/log/squid/store.log
+#		cache_store_log daemon:/var/log/squid/store.log
 #Default:
-# cache_store_log /var/log/squid/store.log
+# none
 
-#  TAG: cache_swap_log
-#	Location for the cache "swap.log."  This log file holds the
-#	metadata of objects saved on disk.  It is used to rebuild the
-#	cache during startup.  Normally this file resides in each
+#  TAG: cache_swap_state
+#	Location for the cache "swap.state" file. This index file holds
+#	the metadata of objects saved on disk.  It is used to rebuild
+#	the cache during startup.  Normally this file resides in each
 #	'cache_dir' directory, but you may specify an alternate
 #	pathname here.  Note you must give a full filename, not just
 #	a directory. Since this is the index for the whole object
 #	list you CANNOT periodically rotate it!
 #
-#	If %s can be used in the file name then it will be replaced with a
+#	If %s can be used in the file name it will be replaced with a
 #	a representation of the cache_dir name where each / is replaced
 #	with '.'. This is needed to allow adding/removing cache_dir
 #	lines when cache_swap_log is being used.
-#	    
+#
 #	If have more than one 'cache_dir', and %s is not used in the name
-#	then these swap logs will have names such as:
+#	these swap logs will have names such as:
 #
 #		cache_swap_log.00
 #		cache_swap_log.01
@@ -647,37 +3141,47 @@ no_cache deny QUERY
 #	The numbered extension (which is added automatically)
 #	corresponds to the order of the 'cache_dir' lines in this
 #	configuration file.  If you change the order of the 'cache_dir'
-#	lines in this file, then these log files will NOT correspond to
+#	lines in this file, these index files will NOT correspond to
 #	the correct 'cache_dir' entry (unless you manually rename
-#	them).  We recommend that you do NOT use this option.  It is
-#	better to keep these log files in each 'cache_dir' directory.
-#
+#	them).  We recommend you do NOT use this option.  It is
+#	better to keep these index files in each 'cache_dir' directory.
 #Default:
 # none
 
-#  TAG: emulate_httpd_log	on|off
-#	The Cache can emulate the log file format which many 'httpd'
-#	programs use.  To disable/enable this emulation, set
-#	emulate_httpd_log to 'off' or 'on'.  The default
-#	is to use the native log format since it includes useful
-#	information that Squid-specific log analyzers use.
+#  TAG: logfile_rotate
+#	Specifies the number of logfile rotations to make when you
+#	type 'squid -k rotate'. The default is 10, which will rotate
+#	with extensions 0 through 9. Setting logfile_rotate to 0 will
+#	disable the file name rotation, but the logfiles are still closed
+#	and re-opened. This will enable you to rename the logfiles
+#	yourself just before sending the rotate signal.
 #
+#	Note, the 'squid -k rotate' command normally sends a USR1
+#	signal to the running squid process.  In certain situations
+#	(e.g. on Linux with Async I/O), USR1 is used for other
+#	purposes, so -k rotate uses another signal.  It is best to get
+#	in the habit of using 'squid -k rotate' instead of 'kill -USR1
+#	<pid>'.
+#
+#	Note, from Squid-3.1 this option has no effect on the cache.log,
+#	that log can be rotated separately by using debug_options
 #Default:
-# emulate_httpd_log off
+# logfile_rotate 0
 
-#  TAG: log_ip_on_direct	on|off
-#	Log the destination IP address in the hierarchy log tag when going
-#	direct. Earlier Squid versions logged the hostname here. If you
-#	prefer the old way set this to off.
-#
+#  TAG: emulate_httpd_log
+#	Replace this with an access_log directive using the format 'common' or 'combined'.
+#Default:
+# none
+
+#  TAG: log_ip_on_direct
+#	Remove this option from your config. To log server or peer names use %<A in the log format.
 #Default:
-# log_ip_on_direct on
+# none
 
 #  TAG: mime_table
 #	Pathname to Squid's MIME table. You shouldn't need to change
 #	this, but the default file contains examples and formatting
 #	information if you do.
-#
 #Default:
 # mime_table /etc/squid/mime.conf
 
@@ -687,66 +3191,103 @@ no_cache deny QUERY
 #	safely and will appear as two bracketed fields at the end of
 #	the access log (for either the native or httpd-emulated log
 #	formats).  To enable this logging set log_mime_hdrs to 'on'.
-#
 #Default:
 # log_mime_hdrs off
 
 #  TAG: useragent_log
-#	Squid will write the User-Agent field from HTTP requests
-#	to the filename specified here.  By default useragent_log
-#	is disabled.
-#
+#	Replace this with an access_log directive using the format 'useragent'.
 #Default:
 # none
 
 #  TAG: referer_log
-# Note: This option is only available if Squid is rebuilt with the
-#       --enable-referer-log option
-#
-#	Squid will write the Referer field from HTTP requests to the
-#	filename specified here.  By default referer_log is disabled.
-#
+#	Replace this with an access_log directive using the format 'referrer'.
 #Default:
 # none
 
 #  TAG: pid_filename
 #	A filename to write the process-id to.  To disable, enter "none".
-#
 #Default:
 # pid_filename /var/run/squid.pid
 
+#  TAG: log_fqdn
+#	Remove this option from your config. To log FQDN use %>A in the log format.
+#Default:
+# none
+
+#  TAG: client_netmask
+#	A netmask for client addresses in logfiles and cachemgr output.
+#	Change this to protect the privacy of your cache clients.
+#	A netmask of 255.255.255.0 will log all IP's in that range with
+#	the last digit set to '0'.
+#Default:
+# client_netmask no_addr
+
+#  TAG: forward_log
+#	Use a regular access.log with ACL limiting it to MISS events.
+#Default:
+# none
+
+#  TAG: strip_query_terms
+#	By default, Squid strips query terms from requested URLs before
+#	logging.  This protects your user's privacy.
+#Default:
+# strip_query_terms on
+
+#  TAG: buffered_logs	on|off
+#	cache.log log file is written with stdio functions, and as such
+#	it can be buffered or unbuffered. By default it will be unbuffered.
+#	Buffering it can speed up the writing slightly (though you are
+#	unlikely to need to worry unless you run with tons of debugging
+#	enabled in which case performance will suffer badly anyway..).
+#Default:
+# buffered_logs off
+
+#  TAG: netdb_filename
+#	A filename where Squid stores it's netdb state between restarts.
+#	To disable, enter "none".
+#Default:
+# netdb_filename stdio:/var/log/squid/netdb.state
+
+# OPTIONS FOR TROUBLESHOOTING
+# -----------------------------------------------------------------------------
+
+#  TAG: cache_log
+#	Cache logging file. This is where general information about
+#	your cache's behavior goes. You can increase the amount of data
+#	logged to this file and how often its rotated with "debug_options"
+#Default:
+# cache_log /var/log/squid/cache.log
+
 #  TAG: debug_options
 #	Logging options are set as section,level where each source file
 #	is assigned a unique section.  Lower levels result in less
 #	output,  Full debugging (level 9) can result in a very large
-#	log file, so be careful.  The magic word "ALL" sets debugging
-#	levels for all sections.  We recommend normally running with
-#	"ALL,1".
+#	log file, so be careful.
 #
+#	The magic word "ALL" sets debugging levels for all sections.
+#	We recommend normally running with "ALL,1".
+#
+#	The rotate=N option can be used to keep more or less of these logs
+#	than would otherwise be kept by logfile_rotate.
+#	For most uses a single log should be enough to monitor current
+#	events affecting Squid.
 #Default:
 # debug_options ALL,1
 
-#  TAG: log_fqdn	on|off
-#	Turn this on if you wish to log fully qualified domain names
-#	in the access.log. To do this Squid does a DNS lookup of all
-#	IP's connecting to it. This can (in some situations) increase
-#	latency, which makes your cache seem slower for interactive
-#	browsing. 
+#  TAG: coredump_dir
+#	By default Squid leaves core files in the directory from where
+#	it was started. If you set 'coredump_dir' to a directory
+#	that exists, Squid will chdir() to that directory at startup
+#	and coredump files will be left there.
 #
 #Default:
-# log_fqdn off
-
-#  TAG: client_netmask
-#	A netmask for client addresses in logfiles and cachemgr output.
-#	Change this to protect the privacy of your cache clients.
-#	A netmask of 255.255.255.0 will log all IP's in that range with
-#	the last digit set to '0'.
+# coredump_dir none
 #
-#Default:
-# client_netmask 255.255.255.255
 
+# Leave coredumps in the first cache dir
+coredump_dir /var/spool/squid
 
-# OPTIONS FOR EXTERNAL SUPPORT PROGRAMS
+# OPTIONS FOR FTP GATEWAYING
 # -----------------------------------------------------------------------------
 
 #  TAG: ftp_user
@@ -754,272 +3295,258 @@ no_cache deny QUERY
 #	(and enable the use of picky ftp servers), set this to something
 #	reasonable for your domain, like wwwuser@somewhere.net
 #
-#	The reason why this is domainless by default is that the
+#	The reason why this is domainless by default is the
 #	request can be made on the behalf of a user in any domain,
 #	depending on how the cache is used.
-#	Some ftp server also validate that the email address is valid
+#	Some ftp server also validate the email address is valid
 #	(for example perl.com).
-#
 #Default:
 # ftp_user Squid@
 
-#  TAG: ftp_list_width
-#	Sets the width of ftp listings. This should be set to fit in
-#	the width of a standard browser. Setting this too small
-#	can cut off long filenames when browsing ftp sites.
-#
-#Default:
-# ftp_list_width 32
-
 #  TAG: ftp_passive
 #	If your firewall does not allow Squid to use passive
-#	connections, then turn off this option.
+#	connections, turn off this option.
 #
+#	Use of ftp_epsv_all option requires this to be ON.
 #Default:
 # ftp_passive on
 
-#  TAG: cache_dns_program
-# Note: This option is only available if Squid is rebuilt with the
-#       --disable-internal-dns option
+#  TAG: ftp_epsv_all
+#	FTP Protocol extensions permit the use of a special "EPSV ALL" command.
 #
-#	Specify the location of the executable for dnslookup process.
+#	NATs may be able to put the connection on a "fast path" through the
+#	translator, as the EPRT command will never be used and therefore,
+#	translation of the data portion of the segments will never be needed.
+#
+#	When a client only expects to do two-way FTP transfers this may be
+#	useful.
+#	If squid finds that it must do a three-way FTP transfer after issuing
+#	an EPSV ALL command, the FTP session will fail.
 #
+#	If you have any doubts about this option do not use it.
+#	Squid will nicely attempt all other connection methods.
+#
+#	Requires ftp_passive to be ON (default) for any effect.
 #Default:
-# cache_dns_program /usr/lib/squid/
+# ftp_epsv_all off
 
-#  TAG: dns_children
-# Note: This option is only available if Squid is rebuilt with the
-#       --disable-internal-dns option
+#  TAG: ftp_epsv
+#	FTP Protocol extensions permit the use of a special "EPSV" command.
 #
-#	The number of processes spawn to service DNS name lookups.
-#	For heavily loaded caches on large servers, you should
-#	probably increase this value to at least 10.  The maximum
-#	is 32.  The default is 5.
+#	NATs may be able to put the connection on a "fast path" through the
+#	translator using EPSV, as the EPRT command will never be used
+#	and therefore, translation of the data portion of the segments 
+#	will never be needed.
 #
-#	You must have at least one dnsserver process.
+#	Turning this OFF will prevent EPSV being attempted.
+#	WARNING: Doing so will convert Squid back to the old behavior with all
+#	the related problems with external NAT devices/layers.
 #
+#	Requires ftp_passive to be ON (default) for any effect.
 #Default:
-# dns_children 5
+# ftp_epsv on
 
-#  TAG: dns_retransmit_interval
-#	Initial retransmit interval for DNS queries. The interval is
-#	doubled each time all configured DNS servers have been tried.
+#  TAG: ftp_eprt
+#	FTP Protocol extensions permit the use of a special "EPRT" command.
 #
+#	This extension provides a protocol neutral alternative to the
+#	IPv4-only PORT command. When supported it enables active FTP data
+#	channels over IPv6 and efficient NAT handling.
 #
-#Default:
-# dns_retransmit_interval 5 seconds
-
-#  TAG: dns_timeout
-#	DNS Query timeout. If no response is received to a DNS query
-#	within this time then all DNS servers for the queried domain
-#	is assumed to be unavailable.
+#	Turning this OFF will prevent EPRT being attempted and will skip
+#	straight to using PORT for IPv4 servers.
 #
+#	Some devices are known to not handle this extension correctly and
+#	may result in crashes. Devices which suport EPRT enough to fail
+#	cleanly will result in Squid attempting PORT anyway. This directive
+#	should only be disabled when EPRT results in device failures.
+#
+#	WARNING: Doing so will convert Squid back to the old behavior with all
+#	the related problems with external NAT devices/layers and IPv4-only FTP.
 #Default:
-# dns_timeout 5 minutes
+# ftp_eprt on
 
-#  TAG: dns_defnames	on|off
-# Note: This option is only available if Squid is rebuilt with the
-#       --disable-internal-dns option
-#
-#	Normally the 'dnsserver' disables the RES_DEFNAMES resolver
-#	option (see res_init(3)).  This prevents caches in a hierarchy
-#	from interpreting single-component hostnames locally.  To allow
-#	dnsserver to handle single-component names, enable this
-#	option.
-#
+#  TAG: ftp_sanitycheck
+#	For security and data integrity reasons Squid by default performs
+#	sanity checks of the addresses of FTP data connections ensure the
+#	data connection is to the requested server. If you need to allow
+#	FTP connections to servers using another IP address for the data
+#	connection turn this off.
 #Default:
-# dns_defnames off
+# ftp_sanitycheck on
 
-#  TAG: dns_nameservers
-#	Use this if you want to specify a list of DNS name servers
-#	(IP addresses) to use instead of those given in your
-#	/etc/resolv.conf file.
-#
-#	Example: dns_nameservers 10.0.0.1 192.172.0.4
+#  TAG: ftp_telnet_protocol
+#	The FTP protocol is officially defined to use the telnet protocol
+#	as transport channel for the control connection. However, many
+#	implementations are broken and does not respect this aspect of
+#	the FTP protocol.
 #
+#	If you have trouble accessing files with ASCII code 255 in the
+#	path or similar problems involving this ASCII code you can
+#	try setting this directive to off. If that helps, report to the
+#	operator of the FTP server in question that their FTP server
+#	is broken and does not follow the FTP standard.
 #Default:
-# none
+# ftp_telnet_protocol on
+
+# OPTIONS FOR EXTERNAL SUPPORT PROGRAMS
+# -----------------------------------------------------------------------------
 
 #  TAG: diskd_program
 #	Specify the location of the diskd executable.
-#	Note that this is only useful if you have compiled in
+#	Note this is only useful if you have compiled in
 #	diskd as one of the store io modules.
-#
 #Default:
-# diskd_program /usr/lib/squid/diskd
+# diskd_program /usr/lib64/squid/diskd
 
 #  TAG: unlinkd_program
 #	Specify the location of the executable for file deletion process.
-#
 #Default:
-# unlinkd_program /usr/lib/squid/unlinkd
+# unlinkd_program /usr/lib64/squid/unlinkd
 
 #  TAG: pinger_program
-# Note: This option is only available if Squid is rebuilt with the
-#       --enable-icmp option
-#
 #	Specify the location of the executable for the pinger process.
-#	This is only useful if you configured Squid (during compilation)
-#	with the '--enable-icmp' option.
-#
 #Default:
-# pinger_program /usr/lib/squid/
+# pinger_program /usr/lib64/squid/pinger
 
-#  TAG: redirect_program
-#	Specify the location of the executable for the URL redirector.
-#	Since they can perform almost any function there isn't one included.
-#	See the Release-Notes for information on how to write one.
-#	By default, a redirector is not used.
-#
+#  TAG: pinger_enable
+#	Control whether the pinger is active at run-time.
+#	Enables turning ICMP pinger on and off with a simple
+#	squid -k reconfigure.
 #Default:
-# none
+# pinger_enable on
 
-#  TAG: redirect_children
-#	The number of redirector processes to spawn. If you start
-#	too few Squid will have to wait for them to process a backlog of
-#	URLs, slowing it down. If you start too many they will use RAM
-#	and other system resources.
-#
-#Default:
-# redirect_children 5
+# OPTIONS FOR URL REWRITING
+# -----------------------------------------------------------------------------
 
-#  TAG: redirect_rewrites_host_header
-#	By default Squid rewrites any Host: header in redirected
-#	requests.  If you are running a accelerator then this may
-#	not be a wanted effect of a redirector.
+#  TAG: url_rewrite_program
+#	Specify the location of the executable URL rewriter to use.
+#	Since they can perform almost any function there isn't one included.
 #
-#Default:
-# redirect_rewrites_host_header on
-
-#  TAG: redirector_access
-#	If defined, this access list specifies which requests are
-#	sent to the redirector processes.  By default all requests
-#	are sent.
+#	For each requested URL, the rewriter will receive on line with the format
 #
-#Default:
-# none
-
-#  TAG: authenticate_program
-#	Specify the command for the external authenticator.  Such a
-#	program reads a line containing "username password" and replies
-#	"OK" or "ERR" in an endless loop.  If you use an authenticator,
-#	make sure you have 1 acl of type proxy_auth.  By default, the
-#	authenticator_program is not used.
+#	URL <SP> client_ip "/" fqdn <SP> user <SP> method [<SP> kvpairs]<NL>
 #
-#	If you want to use the traditional proxy authentication,
-#	jump over to the ../auth_modules/NCSA directory and
-#	type:
-#		% make
-#		% make install
+#	In the future, the rewriter interface will be extended with
+#	key=value pairs ("kvpairs" shown above).  Rewriter programs
+#	should be prepared to receive and possibly ignore additional
+#	whitespace-separated tokens on each input line.
 #
-#	Then, set this line to something like
+#	And the rewriter may return a rewritten URL. The other components of
+#	the request line does not need to be returned (ignored if they are).
 #
-#	authenticate_program /usr/bin/ncsa_auth /usr/etc/passwd
+#	The rewriter can also indicate that a client-side redirect should
+#	be performed to the new URL. This is done by prefixing the returned
+#	URL with "301:" (moved permanently) or 302: (moved temporarily), etc.
 #
+#	By default, a URL rewriter is not used.
 #Default:
 # none
 
-#  TAG: authenticate_children
-#	The number of authenticator processes to spawn (default 5). If you
-#	start too few Squid will have to wait for them to process a backlog
-#	of usercode/password verifications, slowing it down. When password
-#	verifications are done via a (slow) network you are likely to need
-#	lots of authenticator processes.
+#  TAG: url_rewrite_children
+#	The maximum number of redirector processes to spawn. If you limit
+#	it too few Squid will have to wait for them to process a backlog of
+#	URLs, slowing it down. If you allow too many they will use RAM
+#	and other system resources noticably.
+#	
+#	The startup= and idle= options allow some measure of skew in your
+#	tuning.
+#	
+#		startup=
+#	
+#	Sets a minimum of how many processes are to be spawned when Squid
+#	starts or reconfigures. When set to zero the first request will
+#	cause spawning of the first child process to handle it.
+#	
+#	Starting too few will cause an initial slowdown in traffic as Squid
+#	attempts to simultaneously spawn enough processes to cope.
+#	
+#		idle=
+#	
+#	Sets a minimum of how many processes Squid is to try and keep available
+#	at all times. When traffic begins to rise above what the existing
+#	processes can handle this many more will be spawned up to the maximum
+#	configured. A minimum setting of 1 is required.
 #
-#Default:
-# authenticate_children 5
-
-#  TAG: authenticate_ttl
-#	The time a checked username/password combination remains cached.
-#	If a wrong password is given for a cached user, the user gets
-#	removed from the username/password cache forcing a revalidation.
+#		concurrency=
 #
+#	The number of requests each redirector helper can handle in
+#	parallel. Defaults to 0 which indicates the redirector
+#	is a old-style single threaded redirector.
+#
+#	When this directive is set to a value >= 1 then the protocol
+#	used to communicate with the helper is modified to include
+#	a request ID in front of the request/response. The request
+#	ID from the request must be echoed back with the response
+#	to that request.
 #Default:
-# authenticate_ttl 1 hour
+# url_rewrite_children 20 startup=0 idle=1 concurrency=0
 
-#  TAG: authenticate_ip_ttl
-#	With this option you control how long a proxy authentication
-#	will be bound to a specific IP address. If a request using
-#	the same user name is received during this time then access
-#	will be denied and both users are required to reauthenticate
-#	them selves.  The idea behind this is to make it annoying
-#	for people to share their password to their friends, but
-#	yet allow a dialup user to reconnect on a different dialup
-#	port.
-#
-#	The default is 0 to disable the check. Recommended value
-#	if you have dialup users are no more than 60 seconds to allow
-#	the user to redial without hassle. If all your users are
-#	stationary then higher values may be used.
-#
-#	See also authenticate_ip_ttl_is_strict
-#
+#  TAG: url_rewrite_host_header
+#	To preserve same-origin security policies in browsers and
+#	prevent Host: header forgery by redirectors Squid rewrites
+#	any Host: header in redirected requests.
+#	
+#	If you are running an accelerator this may not be a wanted
+#	effect of a redirector. This directive enables you disable
+#	Host: alteration in reverse-proxy traffic.
+#	
+#	WARNING: Entries are cached on the result of the URL rewriting
+#	process, so be careful if you have domain-virtual hosts.
+#	
+#	WARNING: Squid and other software verifies the URL and Host
+#	are matching, so be careful not to relay through other proxies
+#	or inspecting firewalls with this disabled.
 #Default:
-# authenticate_ip_ttl 0 seconds
+# url_rewrite_host_header on
 
-#  TAG: authenticate_ip_ttl_is_strict
-#	This option makes authenticate_ip_ttl a bit stricted. With this
-#	enabled authenticate_ip_ttl will deny all access from other IP
-#	addresses until the TTL has expired, and the IP address "owning"
-#	the userid will not be forced to reauthenticate.
+#  TAG: url_rewrite_access
+#	If defined, this access list specifies which requests are
+#	sent to the redirector processes.  By default all requests
+#	are sent.
 #
+#	This clause supports both fast and slow acl types.
+#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
 #Default:
-# authenticate_ip_ttl_is_strict on
+# none
 
+#  TAG: url_rewrite_bypass
+#	When this is 'on', a request will not go through the
+#	redirector if all redirectors are busy.  If this is 'off'
+#	and the redirector queue grows too large, Squid will exit
+#	with a FATAL error and ask you to increase the number of
+#	redirectors.  You should only enable this if the redirectors
+#	are not critical to your caching system.  If you use
+#	redirectors for access control, and you enable this option,
+#	users may have access to pages they should not
+#	be allowed to request.
+#Default:
+# url_rewrite_bypass off
 
 # OPTIONS FOR TUNING THE CACHE
 # -----------------------------------------------------------------------------
 
-#  TAG: wais_relay_host
-#  TAG: wais_relay_port
-#	Relay WAIS request to host (1st arg) at port (2 arg).
+#  TAG: cache
+#	A list of ACL elements which, if matched and denied, cause the request to
+#	not be satisfied from the cache and the reply to not be cached.
+#	In other words, use this to force certain objects to never be cached.
 #
-#Default:
-# wais_relay_port 0
-
-#  TAG: request_header_max_size	(KB)
-#	This specifies the maximum size for HTTP headers in a request.
-#	Request headers are usually relatively small (about 512 bytes).
-#	Placing a limit on the request header size will catch certain
-#	bugs (for example with persistent connections) and possibly
-#	buffer-overflow or denial-of-service attacks.
+#	You must use the words 'allow' or 'deny' to indicate whether items
+#	matching the ACL should be allowed or denied into the cache.
 #
-#Default:
-# request_header_max_size 10 KB
-
-#  TAG: request_body_max_size	(KB)
-#	This specifies the maximum size for an HTTP request body.
-#	In other words, the maximum size of a PUT/POST request.
-#	A user who attempts to send a request with a body larger
-#	than this limit receives an "Invalid Request" error message.
-#	If you set this parameter to a zero, there will be no limit
-#	imposed.
+#	Default is to allow all to be cached.
 #
+#	This clause supports both fast and slow acl types.
+#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
 #Default:
-# request_body_max_size 1 MB
+# none
 
-#  TAG: reply_body_max_size	(KB)
-#	This option specifies the maximum size of a reply body.  It
-#	can be used to prevent users from downloading very large files,
-#	such as MP3's and movies.   The reply size is checked twice.
-#	First when we get the reply headers, we check the
-#	content-length value.  If the content length value exists and
-#	is larger than this parameter, the request is denied and the
-#	user receives an error message that says "the request or reply
-#	is too large." If there is no content-length, and the reply
-#	size exceeds this limit, the client's connection is just closed
-#	and they will receive a partial reply.
-#
-#	NOTE: downstream caches probably can not detect a partial reply
-#	if there is no content-length header, so they will cache
-#	partial responses and give them out as hits.  You should NOT
-#	use this option if you have downstream caches.
-#
-#	If you set this parameter to zero (the default), there will be
-#	no limit imposed.
-#
+#  TAG: max_stale	time-units
+#	This option puts an upper limit on how stale content Squid
+#	will serve from the cache if cache validation fails.
+#	Can be overriden by the refresh_pattern max-stale option.
 #Default:
-# reply_body_max_size 0
+# max_stale 1 week
 
 #  TAG: refresh_pattern
 #	usage: refresh_pattern [-i] regex min percent max [options]
@@ -1040,18 +3567,31 @@ no_cache deny QUERY
 #	'Max' is an upper limit on how long objects without an explicit
 #	expiry time will be considered fresh.
 #
-#	options: overrsde-expire
+#	options: override-expire
 #		 override-lastmod
 #		 reload-into-ims
 #		 ignore-reload
+#		 ignore-no-store
+#		 ignore-must-revalidate
+#		 ignore-private
+#		 ignore-auth
+#		 max-stale=NN
+#		 refresh-ims
+#		 store-stale
 #
 #		override-expire enforces min age even if the server
-#		sent a Expires: header. Doing this VIOLATES the HTTP
-#		standard.  Enabling this feature could make you liable
-#		for problems which it causes.
+#		sent an explicit expiry time (e.g., with the
+#		Expires: header or Cache-Control: max-age). Doing this
+#		VIOLATES the HTTP standard.  Enabling this feature
+#		could make you liable for problems which it causes.
+#
+#		Note: override-expire does not enforce staleness - it only extends
+#		freshness / min. If the server returns a Expires time which
+#		is longer than your max time, Squid will still consider
+#		the object fresh for that period of time.
 #
 #		override-lastmod enforces min age even on objects
-#		that was modified recently.
+#		that were modified recently.
 #
 #		reload-into-ims changes client no-cache or ``reload''
 #		to If-Modified-Since requests. Doing this VIOLATES the
@@ -1062,10 +3602,44 @@ no_cache deny QUERY
 #		header. Doing this VIOLATES the HTTP standard. Enabling
 #		this feature could make you liable for problems which
 #		it causes.
-#		
-#	Please see the file doc/Release-Notes-1.1.txt for a full
-#	description of Squid's refresh algorithm.  Basically a
-#	cached object is: (the order is changed from 1.1.X)
+#
+#		ignore-no-store ignores any ``Cache-control: no-store''
+#		headers received from a server. Doing this VIOLATES
+#		the HTTP standard. Enabling this feature could make you
+#		liable for problems which it causes.
+#
+#		ignore-must-revalidate ignores any ``Cache-Control: must-revalidate``
+#		headers received from a server. Doing this VIOLATES
+#		the HTTP standard. Enabling this feature could make you
+#		liable for problems which it causes.
+#
+#		ignore-private ignores any ``Cache-control: private''
+#		headers received from a server. Doing this VIOLATES
+#		the HTTP standard. Enabling this feature could make you
+#		liable for problems which it causes.
+#
+#		ignore-auth caches responses to requests with authorization,
+#		as if the originserver had sent ``Cache-control: public''
+#		in the response header. Doing this VIOLATES the HTTP standard.
+#		Enabling this feature could make you liable for problems which
+#		it causes.
+#
+#		refresh-ims causes squid to contact the origin server
+#		when a client issues an If-Modified-Since request. This
+#		ensures that the client will receive an updated version
+#		if one is available.
+#
+#		store-stale stores responses even if they don't have explicit 
+#		freshness or a validator (i.e., Last-Modified or an ETag) 
+#		present, or if they're already stale. By default, Squid will 
+#		not cache such responses because they usually can't be
+#		reused. Note that such responses will be stale by default.
+#
+#		max-stale=NN provide a maximum staleness factor. Squid won't
+#		serve objects more stale than this even if it failed to
+#		validate the object. Default: use the max_stale global limit.
+#
+#	Basically a cached object is:
 #
 #		FRESH if expires < now, else STALE
 #		STALE if age > max
@@ -1075,57 +3649,42 @@ no_cache deny QUERY
 #
 #	The refresh_pattern lines are checked in the order listed here.
 #	The first entry which matches is used.  If none of the entries
-#	match, then the default will be used.
+#	match the default will be used.
 #
 #	Note, you must uncomment all the default lines if you want
 #	to change one. The default setting is only active if none is
 #	used.
 #
-#Default:
-# refresh_pattern ^ftp:		1440	20%	10080
-# refresh_pattern ^gopher:	1440	0%	1440
-# refresh_pattern .		0	20%	4320
-
-#  TAG: reference_age
-#	As a part of normal operation, Squid performs Least Recently
-#	Used removal of cached objects.  The LRU age for removal is
-#	computed dynamically, based on the amount of disk space in
-#	use.  The dynamic value can be seen in the Cache Manager 'info'
-#	output.
 #
-#	The 'reference_age' parameter defines the maximum LRU age.  For
-#	example, setting reference_age to '1 week' will cause objects
-#	to be removed if they have not been accessed for a week or
-#	more.  The default value is one year.
-#
-#	Specify a number here, followed by units of time.  For example:
-#		1 week
-#		3.5 days
-#		4 months
-#		2.2 hours
-#
-#	NOTE: this parameter is not used when using the enhanced
-#	replacement policies, GDSH or LFUDA.
-#
-#Default:
-# reference_age 1 year
+
+# Add any of your own refresh_pattern entries above these.
+refresh_pattern ^ftp:		1440	20%	10080
+refresh_pattern ^gopher:	1440	0%	1440
+refresh_pattern -i (/cgi-bin/|\?) 0	0%	0
+refresh_pattern .		0	20%	4320
 
 #  TAG: quick_abort_min	(KB)
+#Default:
+# quick_abort_min 16 KB
+
 #  TAG: quick_abort_max	(KB)
+#Default:
+# quick_abort_max 16 KB
+
 #  TAG: quick_abort_pct	(percent)
-#	The cache can be configured to continue downloading aborted
-#	requests.  This may be undesirable on slow (e.g. SLIP) links
-#	and/or very busy caches.  Impatient users may tie up file
-#	descriptors and bandwidth by repeatedly requesting and
-#	immediately aborting downloads.
+#	The cache by default continues downloading aborted requests
+#	which are almost completed (less than 16 KB remaining). This
+#	may be undesirable on slow (e.g. SLIP) links and/or very busy
+#	caches.  Impatient users may tie up file descriptors and
+#	bandwidth by repeatedly requesting and immediately aborting
+#	downloads.
 #
 #	When the user aborts a request, Squid will check the
 #	quick_abort values to the amount of data transfered until
 #	then.
 #
 #	If the transfer has less than 'quick_abort_min' KB remaining,
-#	it will finish the retrieval.  Setting 'quick_abort_min' to -1
-#	will disable the quick_abort feature.
+#	it will finish the retrieval.
 #
 #	If the transfer has more than 'quick_abort_max' KB remaining,
 #	it will abort the retrieval.
@@ -1133,103 +3692,503 @@ no_cache deny QUERY
 #	If more than 'quick_abort_pct' of the transfer has completed,
 #	it will finish the retrieval.
 #
+#	If you do not want any retrieval to continue after the client
+#	has aborted, set both 'quick_abort_min' and 'quick_abort_max'
+#	to '0 KB'.
+#
+#	If you want retrievals to always continue if they are being
+#	cached set 'quick_abort_min' to '-1 KB'.
 #Default:
-# quick_abort_min 16 KB
-# quick_abort_max 16 KB
 # quick_abort_pct 95
 
+#  TAG: read_ahead_gap	buffer-size
+#	The amount of data the cache will buffer ahead of what has been
+#	sent to the client when retrieving an object from another server.
+#Default:
+# read_ahead_gap 16 KB
+
 #  TAG: negative_ttl	time-units
-#	Time-to-Live (TTL) for failed requests.  Certain types of
-#	failures (such as "connection refused" and "404 Not Found") are
-#	negatively-cached for a configurable amount of time.  The
-#	default is 5 minutes.  Note that this is different from
-#	negative caching of DNS lookups.
+#	Set the Default Time-to-Live (TTL) for failed requests.
+#	Certain types of failures (such as "connection refused" and
+#	"404 Not Found") are able to be negatively-cached for a short time.
+#	Modern web servers should provide Expires: header, however if they
+#	do not this can provide a minimum TTL.
+#	The default is not to cache errors with unknown expiry details.
+#
+#	Note that this is different from negative caching of DNS lookups.
 #
+#	WARNING: Doing this VIOLATES the HTTP standard.  Enabling
+#	this feature could make you liable for problems which it
+#	causes.
 #Default:
-# negative_ttl 5 minutes
+# negative_ttl 0 seconds
 
 #  TAG: positive_dns_ttl	time-units
-#	Time-to-Live (TTL) for positive caching of successful DNS lookups.
-#	Default is 6 hours (360 minutes).  If you want to minimize the
-#	use of Squid's ipcache, set this to 1, not 0.
-#
+#	Upper limit on how long Squid will cache positive DNS responses.
+#	Default is 6 hours (360 minutes). This directive must be set
+#	larger than negative_dns_ttl.
 #Default:
 # positive_dns_ttl 6 hours
 
 #  TAG: negative_dns_ttl	time-units
 #	Time-to-Live (TTL) for negative caching of failed DNS lookups.
-#
+#	This also sets the lower cache limit on positive lookups.
+#	Minimum value is 1 second, and it is not recommendable to go
+#	much below 10 seconds.
 #Default:
-# negative_dns_ttl 5 minutes
+# negative_dns_ttl 1 minutes
 
-#  TAG: range_offset_limit	(bytes)
-#	Sets a upper limit on how far into the the file a Range request
-#	may be to cause Squid to prefetch the whole file. If beyond this
-#	limit then Squid forwards the Range request as it is and the result
-#	is NOT cached.
-#
+#  TAG: range_offset_limit	size [acl acl...]
+#	usage: (size) [units] [[!]aclname]
+#	
+#	Sets an upper limit on how far (number of bytes) into the file 
+#	a Range request	may be to cause Squid to prefetch the whole file. 
+#	If beyond this limit, Squid forwards the Range request as it is and 
+#	the result is NOT cached.
+#	
 #	This is to stop a far ahead range request (lets say start at 17MB)
 #	from making Squid fetch the whole object up to that point before
 #	sending anything to the client.
+#	
+#	Multiple range_offset_limit lines may be specified, and they will 
+#	be searched from top to bottom on each request until a match is found. 
+#	The first match found will be used.  If no line matches a request, the 
+#	default limit of 0 bytes will be used.
+#	
+#	'size' is the limit specified as a number of units.
+#	
+#	'units' specifies whether to use bytes, KB, MB, etc.
+#	If no units are specified bytes are assumed.
+#	
+#	A size of 0 causes Squid to never fetch more than the
+#	client requested. (default)
+#	
+#	A size of 'none' causes Squid to always fetch the object from the
+#	beginning so it may cache the result. (2.0 style)
+#	
+#	'aclname' is the name of a defined ACL.
+#	
+#	NP: Using 'none' as the byte value here will override any quick_abort settings 
+#	    that may otherwise apply to the range request. The range request will
+#	    be fully fetched from start to finish regardless of the client
+#	    actions. This affects bandwidth usage.
+#Default:
+# none
+
+#  TAG: minimum_expiry_time	(seconds)
+#	The minimum caching time according to (Expires - Date)
+#	Headers Squid honors if the object can't be revalidated
+#	defaults to 60 seconds. In reverse proxy environments it
+#	might be desirable to honor shorter object lifetimes. It
+#	is most likely better to make your server return a
+#	meaningful Last-Modified header however. In ESI environments
+#	where page fragments often have short lifetimes, this will
+#	often be best set to 0.
+#Default:
+# minimum_expiry_time 60 seconds
+
+#  TAG: store_avg_object_size	(bytes)
+#	Average object size, used to estimate number of objects your
+#	cache can hold.  The default is 13 KB.
+#Default:
+# store_avg_object_size 13 KB
+
+#  TAG: store_objects_per_bucket
+#	Target number of objects per bucket in the store hash table.
+#	Lowering this value increases the total number of buckets and
+#	also the storage maintenance rate.  The default is 20.
+#Default:
+# store_objects_per_bucket 20
+
+# HTTP OPTIONS
+# -----------------------------------------------------------------------------
+
+#  TAG: request_header_max_size	(KB)
+#	This specifies the maximum size for HTTP headers in a request.
+#	Request headers are usually relatively small (about 512 bytes).
+#	Placing a limit on the request header size will catch certain
+#	bugs (for example with persistent connections) and possibly
+#	buffer-overflow or denial-of-service attacks.
+#Default:
+# request_header_max_size 64 KB
+
+#  TAG: reply_header_max_size	(KB)
+#	This specifies the maximum size for HTTP headers in a reply.
+#	Reply headers are usually relatively small (about 512 bytes).
+#	Placing a limit on the reply header size will catch certain
+#	bugs (for example with persistent connections) and possibly
+#	buffer-overflow or denial-of-service attacks.
+#Default:
+# reply_header_max_size 64 KB
+
+#  TAG: request_body_max_size	(bytes)
+#	This specifies the maximum size for an HTTP request body.
+#	In other words, the maximum size of a PUT/POST request.
+#	A user who attempts to send a request with a body larger
+#	than this limit receives an "Invalid Request" error message.
+#	If you set this parameter to a zero (the default), there will
+#	be no limit imposed.
+#Default:
+# request_body_max_size 0 KB
+
+#  TAG: client_request_buffer_max_size	(bytes)
+#	This specifies the maximum buffer size of a client request.
+#	It prevents squid eating too much memory when somebody uploads
+#	a large file.
+#Default:
+# client_request_buffer_max_size 512 KB
+
+#  TAG: chunked_request_body_max_size	(bytes)
+#	A broken or confused HTTP/1.1 client may send a chunked HTTP
+#	request to Squid. Squid does not have full support for that
+#	feature yet. To cope with such requests, Squid buffers the
+#	entire request and then dechunks request body to create a
+#	plain HTTP/1.0 request with a known content length. The plain
+#	request is then used by the rest of Squid code as usual.
 #
-#	A value of -1 causes Squid to always fetch the object from the
-#	beginning so that it may cache the result. (2.0 style)
+#	The option value specifies the maximum size of the buffer used
+#	to hold the request before the conversion. If the chunked
+#	request size exceeds the specified limit, the conversion
+#	fails, and the client receives an "unsupported request" error,
+#	as if dechunking was disabled.
 #
-#	A value of 0 causes Squid to never fetch more than the
-#	client requested. (default)
+#	Dechunking is enabled by default. To disable conversion of
+#	chunked requests, set the maximum to zero.
 #
+#	Request dechunking feature and this option in particular are a
+#	temporary hack. When chunking requests and responses are fully
+#	supported, there will be no need to buffer a chunked request.
 #Default:
-# range_offset_limit 0 KB
+# chunked_request_body_max_size 64 KB
 
+#  TAG: broken_posts
+#	A list of ACL elements which, if matched, causes Squid to send
+#	an extra CRLF pair after the body of a PUT/POST request.
+#
+#	Some HTTP servers has broken implementations of PUT/POST,
+#	and rely on an extra CRLF pair sent by some WWW clients.
+#
+#	Quote from RFC2616 section 4.1 on this matter:
+#
+#	  Note: certain buggy HTTP/1.0 client implementations generate an
+#	  extra CRLF's after a POST request. To restate what is explicitly
+#	  forbidden by the BNF, an HTTP/1.1 client must not preface or follow
+#	  a request with an extra CRLF.
+#
+#	This clause only supports fast acl types.
+#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
+#
+#Example:
+# acl buggy_server url_regex ^http://....
+# broken_posts allow buggy_server
+#Default:
+# none
+
+#  TAG: adaptation_uses_indirect_client	on|off
+#	Controls whether the indirect client IP address (instead of the direct
+#	client IP address) is passed to adaptation services.
+#
+#	See also: follow_x_forwarded_for adaptation_send_client_ip
+#Default:
+# adaptation_uses_indirect_client on
+
+#  TAG: via	on|off
+#	If set (default), Squid will include a Via header in requests and
+#	replies as required by RFC2616.
+#Default:
+# via on
+
+#  TAG: ie_refresh	on|off
+#	Microsoft Internet Explorer up until version 5.5 Service
+#	Pack 1 has an issue with transparent proxies, wherein it
+#	is impossible to force a refresh.  Turning this on provides
+#	a partial fix to the problem, by causing all IMS-REFRESH
+#	requests from older IE versions to check the origin server
+#	for fresh content.  This reduces hit ratio by some amount
+#	(~10% in my experience), but allows users to actually get
+#	fresh content when they want it.  Note because Squid
+#	cannot tell if the user is using 5.5 or 5.5SP1, the behavior
+#	of 5.5 is unchanged from old versions of Squid (i.e. a
+#	forced refresh is impossible).  Newer versions of IE will,
+#	hopefully, continue to have the new behavior and will be
+#	handled based on that assumption.  This option defaults to
+#	the old Squid behavior, which is better for hit ratios but
+#	worse for clients using IE, if they need to be able to
+#	force fresh content.
+#Default:
+# ie_refresh off
+
+#  TAG: vary_ignore_expire	on|off
+#	Many HTTP servers supporting Vary gives such objects
+#	immediate expiry time with no cache-control header
+#	when requested by a HTTP/1.0 client. This option
+#	enables Squid to ignore such expiry times until
+#	HTTP/1.1 is fully implemented.
+#
+#	WARNING: If turned on this may eventually cause some
+#	varying objects not intended for caching to get cached.
+#Default:
+# vary_ignore_expire off
+
+#  TAG: request_entities
+#	Squid defaults to deny GET and HEAD requests with request entities,
+#	as the meaning of such requests are undefined in the HTTP standard
+#	even if not explicitly forbidden.
+#
+#	Set this directive to on if you have clients which insists
+#	on sending request entities in GET or HEAD requests. But be warned
+#	that there is server software (both proxies and web servers) which
+#	can fail to properly process this kind of request which may make you
+#	vulnerable to cache pollution attacks if enabled.
+#Default:
+# request_entities off
+
+#  TAG: request_header_access
+#	Usage: request_header_access header_name allow|deny [!]aclname ...
+#
+#	WARNING: Doing this VIOLATES the HTTP standard.  Enabling
+#	this feature could make you liable for problems which it
+#	causes.
+#
+#	This option replaces the old 'anonymize_headers' and the
+#	older 'http_anonymizer' option with something that is much
+#	more configurable. A list of ACLs for each header name allows
+#	removal of specific header fields under specific conditions.
+#
+#	This option only applies to outgoing HTTP request headers (i.e.,
+#	headers sent by Squid to the next HTTP hop such as a cache peer
+#	or an origin server). The option has no effect during cache hit
+#	detection. The equivalent adaptation vectoring point in ICAP
+#	terminology is post-cache REQMOD.
+#
+#	The option is applied to individual outgoing request header
+#	fields. For each request header field F, Squid uses the first
+#	qualifying sets of request_header_access rules:
+#
+#	    1. Rules with header_name equal to F's name.
+#	    2. Rules with header_name 'Other', provided F's name is not
+#	       on the hard-coded list of commonly used HTTP header names.
+#	    3. Rules with header_name 'All'.
+#
+#	Within that qualifying rule set, rule ACLs are checked as usual.
+#	If ACLs of an "allow" rule match, the header field is allowed to
+#	go through as is. If ACLs of a "deny" rule match, the header is
+#	removed and request_header_replace is then checked to identify
+#	if the removed header has a replacement. If no rules within the
+#	set have matching ACLs, the header field is left as is.
+#
+#	For example, to achieve the same behavior as the old
+#	'http_anonymizer standard' option, you should use:
+#
+#		request_header_access From deny all
+#		request_header_access Referer deny all
+#		request_header_access Server deny all
+#		request_header_access User-Agent deny all
+#		request_header_access WWW-Authenticate deny all
+#		request_header_access Link deny all
+#
+#	Or, to reproduce the old 'http_anonymizer paranoid' feature
+#	you should use:
+#
+#		request_header_access Allow allow all
+#		request_header_access Authorization allow all
+#		request_header_access WWW-Authenticate allow all
+#		request_header_access Proxy-Authorization allow all
+#		request_header_access Proxy-Authenticate allow all
+#		request_header_access Cache-Control allow all
+#		request_header_access Content-Encoding allow all
+#		request_header_access Content-Length allow all
+#		request_header_access Content-Type allow all
+#		request_header_access Date allow all
+#		request_header_access Expires allow all
+#		request_header_access Host allow all
+#		request_header_access If-Modified-Since allow all
+#		request_header_access Last-Modified allow all
+#		request_header_access Location allow all
+#		request_header_access Pragma allow all
+#		request_header_access Accept allow all
+#		request_header_access Accept-Charset allow all
+#		request_header_access Accept-Encoding allow all
+#		request_header_access Accept-Language allow all
+#		request_header_access Content-Language allow all
+#		request_header_access Mime-Version allow all
+#		request_header_access Retry-After allow all
+#		request_header_access Title allow all
+#		request_header_access Connection allow all
+#		request_header_access All deny all
+#
+#	although many of those are HTTP reply headers, and so should be
+#	controlled with the reply_header_access directive.
+#
+#	By default, all headers are allowed (no anonymizing is
+#	performed).
+#Default:
+# none
+
+#  TAG: reply_header_access
+#	Usage: reply_header_access header_name allow|deny [!]aclname ...
+#
+#	WARNING: Doing this VIOLATES the HTTP standard.  Enabling
+#	this feature could make you liable for problems which it
+#	causes.
+#
+#	This option only applies to reply headers, i.e., from the
+#	server to the client.
+#
+#	This is the same as request_header_access, but in the other
+#	direction. Please see request_header_access for detailed
+#	documentation.
+#
+#	For example, to achieve the same behavior as the old
+#	'http_anonymizer standard' option, you should use:
+#
+#		reply_header_access From deny all
+#		reply_header_access Referer deny all
+#		reply_header_access Server deny all
+#		reply_header_access User-Agent deny all
+#		reply_header_access WWW-Authenticate deny all
+#		reply_header_access Link deny all
+#
+#	Or, to reproduce the old 'http_anonymizer paranoid' feature
+#	you should use:
+#
+#		reply_header_access Allow allow all
+#		reply_header_access Authorization allow all
+#		reply_header_access WWW-Authenticate allow all
+#		reply_header_access Proxy-Authorization allow all
+#		reply_header_access Proxy-Authenticate allow all
+#		reply_header_access Cache-Control allow all
+#		reply_header_access Content-Encoding allow all
+#		reply_header_access Content-Length allow all
+#		reply_header_access Content-Type allow all
+#		reply_header_access Date allow all
+#		reply_header_access Expires allow all
+#		reply_header_access Host allow all
+#		reply_header_access If-Modified-Since allow all
+#		reply_header_access Last-Modified allow all
+#		reply_header_access Location allow all
+#		reply_header_access Pragma allow all
+#		reply_header_access Accept allow all
+#		reply_header_access Accept-Charset allow all
+#		reply_header_access Accept-Encoding allow all
+#		reply_header_access Accept-Language allow all
+#		reply_header_access Content-Language allow all
+#		reply_header_access Mime-Version allow all
+#		reply_header_access Retry-After allow all
+#		reply_header_access Title allow all
+#		reply_header_access Connection allow all
+#		reply_header_access All deny all
+#
+#	although the HTTP request headers won't be usefully controlled
+#	by this directive -- see request_header_access for details.
+#
+#	By default, all headers are allowed (no anonymizing is
+#	performed).
+#Default:
+# none
+
+#  TAG: request_header_replace
+#	Usage:   request_header_replace header_name message
+#	Example: request_header_replace User-Agent Nutscrape/1.0 (CP/M; 8-bit)
+#
+#	This option allows you to change the contents of headers
+#	denied with request_header_access above, by replacing them
+#	with some fixed string. This replaces the old fake_user_agent
+#	option.
+#
+#	This only applies to request headers, not reply headers.
+#
+#	By default, headers are removed if denied.
+#Default:
+# none
+
+#  TAG: reply_header_replace
+#        Usage:   reply_header_replace header_name message
+#        Example: reply_header_replace Server Foo/1.0
+#
+#        This option allows you to change the contents of headers
+#        denied with reply_header_access above, by replacing them
+#        with some fixed string.
+#
+#        This only applies to reply headers, not request headers.
+#
+#        By default, headers are removed if denied.
+#Default:
+# none
+
+#  TAG: relaxed_header_parser	on|off|warn
+#	In the default "on" setting Squid accepts certain forms
+#	of non-compliant HTTP messages where it is unambiguous
+#	what the sending application intended even if the message
+#	is not correctly formatted. The messages is then normalized
+#	to the correct form when forwarded by Squid.
+#
+#	If set to "warn" then a warning will be emitted in cache.log
+#	each time such HTTP error is encountered.
+#
+#	If set to "off" then such HTTP errors will cause the request
+#	or response to be rejected.
+#Default:
+# relaxed_header_parser on
 
 # TIMEOUTS
 # -----------------------------------------------------------------------------
 
+#  TAG: forward_timeout	time-units
+#	This parameter specifies how long Squid should at most attempt in
+#	finding a forwarding path for the request before giving up.
+#Default:
+# forward_timeout 4 minutes
+
 #  TAG: connect_timeout	time-units
-#	Some systems (notably Linux) can not be relied upon to properly
-#	time out connect(2) requests.  Therefore the Squid process
-#	enforces its own timeout on server connections.  This parameter
-#	specifies how long to wait for the connect to complete.  The
-#	default is two minutes (120 seconds).
-#
+#	This parameter specifies how long to wait for the TCP connect to
+#	the requested server or peer to complete before Squid should
+#	attempt to find another path where to forward the request.
 #Default:
-# connect_timeout 2 minutes
+# connect_timeout 1 minute
 
 #  TAG: peer_connect_timeout	time-units
 #	This parameter specifies how long to wait for a pending TCP
 #	connection to a peer cache.  The default is 30 seconds.   You
 #	may also set different timeout values for individual neighbors
 #	with the 'connect-timeout' option on a 'cache_peer' line.
-#
 #Default:
 # peer_connect_timeout 30 seconds
 
-#  TAG: siteselect_timeout	time-units
-#	For URN to multiple URL's URL selection
-#
-#Default:
-# siteselect_timeout 4 seconds
-
 #  TAG: read_timeout	time-units
 #	The read_timeout is applied on server-side connections.  After
 #	each successful read(), the timeout will be extended by this
 #	amount.  If no data is read again after this amount of time,
 #	the request is aborted and logged with ERR_READ_TIMEOUT.  The
 #	default is 15 minutes.
-#
 #Default:
 # read_timeout 15 minutes
 
+#  TAG: write_timeout	time-units
+#	This timeout is tracked for all connections that have data
+#	available for writing and are waiting for the socket to become
+#	ready. After each successful write, the timeout is extended by
+#	the configured amount. If Squid has data to write but the
+#	connection is not ready for the configured duration, the
+#	transaction associated with the connection is terminated. The
+#	default is 15 minutes.
+#Default:
+# write_timeout 15 minutes
+
 #  TAG: request_timeout
-#	How long to wait for an HTTP request after connection
-#	establishment.  For persistent connections, wait this long
-#	after the previous request completes.
-#
+#	How long to wait for complete HTTP request headers after initial
+#	connection establishment.
 #Default:
-# request_timeout 30 seconds
+# request_timeout 5 minutes
+
+#  TAG: client_idle_pconn_timeout
+#	How long to wait for the next HTTP request on a persistent
+#	client connection after the previous request completes.
+#Default:
+# client_idle_pconn_timeout 2 minutes
 
 #  TAG: client_lifetime	time-units
-#	The maximum amount of time that a client (browser) is allowed to
+#	The maximum amount of time a client (browser) is allowed to
 #	remain connected to the cache process.  This protects the Cache
 #	from having a lot of sockets (and hence file descriptors) tied up
 #	in a CLOSE_WAIT state from remote clients that go away without
@@ -1242,8 +4201,7 @@ no_cache deny QUERY
 #	should probably change client_lifetime only as a last resort.
 #	If you seem to have many client connections tying up
 #	filedescriptors, we recommend first tuning the read_timeout,
-#	request_timeout, pconn_timeout and quick_abort values.
-#
+#	request_timeout, persistent_request_timeout and quick_abort values.
 #Default:
 # client_lifetime 1 day
 
@@ -1251,35 +4209,33 @@ no_cache deny QUERY
 #	Some clients may shutdown the sending side of their TCP
 #	connections, while leaving their receiving sides open.	Sometimes,
 #	Squid can not tell the difference between a half-closed and a
-#	fully-closed TCP connection.  By default, half-closed client
-#	connections are kept open until a read(2) or write(2) on the
-#	socket returns an error.  Change this option to 'off' and Squid
-#	will immediately close client connections when read(2) returns
-#	"no more data to read."
+#	fully-closed TCP connection.
 #
+#	By default, Squid will immediately close client connections when
+#	read(2) returns "no more data to read."
+#
+#	Change this option to 'on' and Squid will keep open connections
+#	until a read(2) or write(2) on the socket returns an error.
+#	This may show some benefits for reverse proxies. But if not
+#	it is recommended to leave OFF.
 #Default:
-# half_closed_clients on
+# half_closed_clients off
 
-#  TAG: pconn_timeout
+#  TAG: server_idle_pconn_timeout
 #	Timeout for idle persistent connections to servers and other
 #	proxies.
-#
 #Default:
-# pconn_timeout 120 seconds
+# server_idle_pconn_timeout 1 minute
 
 #  TAG: ident_timeout
-#	Maximum time to wait for IDENT requests.  If this is too high,
-#	and you enabled 'ident_lookup', then you might be susceptible
-#	to denial-of-service by having many ident requests going at
-#	once.
-#
-#	Only src type ACL checks are fully supported.  A src_domain
-#	ACL might work at times, but it will not always provide
-#	the correct result.
+# Note: This option is only available if Squid is rebuilt with the
+#       --enable-ident-lookups
 #
-#	This option may be disabled by using --disable-ident with
-#	the configure script.
+#	Maximum time to wait for IDENT lookups to complete.
 #
+#	If this is too high, and you enabled IDENT lookups from untrusted
+#	users, you might be susceptible to denial-of-service by having
+#	many ident requests going at once.
 #Default:
 # ident_timeout 10 seconds
 
@@ -1289,292 +4245,103 @@ no_cache deny QUERY
 #	This value is the lifetime to set for all open descriptors
 #	during shutdown mode.  Any active clients after this many
 #	seconds will receive a 'timeout' message.
-#
 #Default:
 # shutdown_lifetime 30 seconds
-# https://qa.mandriva.com/show_bug.cgi?id=37801
+#
 shutdown_lifetime 5 seconds
 
-# ACCESS CONTROLS
+# ADMINISTRATIVE PARAMETERS
 # -----------------------------------------------------------------------------
 
-#  TAG: acl
-#	Defining an Access List
-#
-#	acl aclname acltype string1 ...
-#	acl aclname acltype "file" ...
-#
-#	when using "file", the file should contain one item per line
-#
-#	acltype is one of src dst srcdomain dstdomain url_pattern
-#		urlpath_pattern time port proto method browser user
-#
-#	By default, regular expressions are CASE-SENSITIVE.  To make
-#	them case-insensitive, use the -i option.
-#
-#	acl aclname src      ip-address/netmask ... (clients IP address)
-#	acl aclname src      addr1-addr2/netmask ... (range of addresses)
-#	acl aclname dst      ip-address/netmask ... (URL host's IP address)
-#	acl aclname myip     ip-address/netmask ... (local socket IP address)
-#
-#	acl aclname srcdomain   .foo.com ...    # reverse lookup, client IP
-#	acl aclname dstdomain   .foo.com ...    # Destination server from URL
-#	acl aclname srcdom_regex [-i] xxx ...   # regex matching client name
-#	acl aclname dstdom_regex [-i] xxx ...   # regex matching server
-#	  # For dstdomain and dstdom_regex  a reverse lookup is tried if a IP
-#	  # based URL is used. The name "none" is used if the reverse lookup
-#	  # fails.
-#
-#	acl aclname time     [day-abbrevs]  [h1:m1-h2:m2]
-#	    day-abbrevs:
-#		S - Sunday
-#		M - Monday
-#		T - Tuesday
-#		W - Wednesday
-#		H - Thursday
-#		F - Friday
-#		A - Saturday
-#	    h1:m1 must be less than h2:m2
-#	acl aclname url_regex [-i] ^http:// ...	# regex matching on whole URL
-#	acl aclname urlpath_regex [-i] \.gif$ ...	# regex matching on URL path
-#	acl aclname port     80 70 21 ...
-#	acl aclname port     0-1024 ...		# ranges allowed
-#	acl aclname myport   3128 ...		# (local socket TCP port)
-#	acl aclname proto    HTTP FTP ...
-#	acl aclname method   GET POST ...
-#	acl aclname browser  [-i] regexp
-#	  # pattern match on User-Agent header
-#	acl aclname ident    username ...
-#	acl aclname ident_regex [-i] pattern ...
-#	  # string match on ident output.
-#	  # use REQUIRED to accept any non-null ident.
-#	acl aclname src_as   number ... 
-#	acl aclname dst_as   number ...
-#	  # Except for access control, AS numbers can be used for
-#	  # routing of requests to specific caches. Here's an 
-#	  # example for routing all requests for AS#1241 and only 
-#	  # those to mycache.mydomain.net:
-#	  # acl asexample dst_as 1241
-#	  # cache_peer_access mycache.mydomain.net allow asexample
-#	  # cache_peer_access mycache_mydomain.net deny all
-#
-#	acl aclname proxy_auth username ...
-#	acl aclname proxy_auth_regex [-i] pattern ...
-#	  # list of valid usernames
-#	  # use REQUIRED to accept any valid username.
-#	  #
-#	  # NOTE: when a Proxy-Authentication header is sent but it is not
-#	  # needed during ACL checking the username is NOT logged
-#	  # in access.log.
-#	  #
-#	  # NOTE: proxy_auth requires a EXTERNAL authentication program
-#	  # to check username/password combinations (see
-#	  # authenticate_program).
-#	  #
-#	  # WARNING: proxy_auth can't be used in a transparent proxy. It
-#	  # collides with any authentication done by origin servers. It may
-#	  # seem like it works at first, but it doesn't.
-#
-#	acl aclname snmp_community string ...
-#	  # A community string to limit access to your SNMP Agent
-#	  # Example:
-#	  # 
-#	  #	acl snmppublic snmp_community public
-#
-#	acl aclname maxconn number
-#	  # This will be matched when the client's IP address has
-#	  # more than <number> HTTP connections established.
-#
-#	acl req_mime_type mime-type1 ...
-#	  # regex match agains the mime type of the request generated
-#	  # by the client. Can be used to detect file upload or some
-#	  # types HTTP tunelling requests.
-#	  # NOTE: This does NOT match the reply. You cannot use this
-#	  # to match the returned file type.
-#
-#Examples:
-#acl myexample dst_as 1241
-#acl mynetwork src
-#acl password proxy_auth REQUIRED
-#acl fileupload req_mime_type -i ^multipart/form-data$
-#
-#Recommended minimum configuration:
-acl all src 0.0.0.0/0.0.0.0
-acl manager proto cache_object
-acl localhost src 127.0.0.1/255.255.255.255
-acl SSL_ports port 443 563
-acl Safe_ports port 80		# http
-acl Safe_ports port 21		# ftp
-acl Safe_ports port 443 563	# https, snews
-acl Safe_ports port 70		# gopher
-acl Safe_ports port 210		# wais
-acl Safe_ports port 1025-65535	# unregistered ports
-acl Safe_ports port 280		# http-mgmt
-acl Safe_ports port 488		# gss-http
-acl Safe_ports port 591		# filemaker
-acl Safe_ports port 777		# multiling http
-acl CONNECT method CONNECT
-
-#  TAG: http_access
-#	Allowing or Denying access based on defined access lists
-#
-#	Access to the HTTP port:
-#	http_access allow|deny [!]aclname ...
-#
-#	NOTE on default values:
-#
-#	If there are no "access" lines present, the default is to deny
-#	the request.
-#
-#	If none of the "access" lines cause a match, the default is the
-#	opposite of the last line in the list.  If the last line was
-#	deny, then the default is allow.  Conversely, if the last line
-#	is allow, the default will be deny.  For these reasons, it is a
-#	good idea to have an "deny all" or "allow all" entry at the end
-#	of your access lists to avoid potential confusion.
-#
-#Default:
-# http_access deny all
-#
-#Recommended minimum configuration:
-#
-# Only allow cachemgr access from localhost
-http_access allow manager localhost
-http_access deny manager
-# Deny requests to unknown ports
-http_access deny !Safe_ports
-# Deny CONNECT to other than SSL ports
-http_access deny CONNECT !SSL_ports
-#
-# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
-#
-# And finally deny all other access to this proxy
-http_access allow localhost
-http_access deny all
-
-#  TAG: icp_access
-#	Allowing or Denying access to the ICP port based on defined
-#	access lists
-#
-#	icp_access  allow|deny [!]aclname ...
-#
-#	See http_access for details
-#
+#  TAG: cache_mgr
+#	Email-address of local cache manager who will receive
+#	mail if the cache dies.  The default is "webmaster."
 #Default:
-# icp_access deny all
-#
-#Allow ICP queries from eveyone
-icp_access allow all
-
-#  TAG: miss_access
-#	Use to force your neighbors to use you as a sibling instead of
-#	a parent.  For example:
-#
-#		acl localclients src 172.16.0.0/16
-#		miss_access allow localclients
-#		miss_access deny  !localclients
-#
-#	This means that only your local clients are allowed to fetch
-#	MISSES and all other clients can only fetch HITS.
-#
-#	By default, allow all clients who passed the http_access rules
-#	to fetch MISSES from us.
-#
-#Default setting:
-# miss_access allow all
+# cache_mgr root
 
-#  TAG: cache_peer_access
-#	Similar to 'cache_peer_domain' but provides more flexibility by
-#	using ACL elements.
-#
-#	cache_peer_access cache-host allow|deny [!]aclname ...
-#
-#	The syntax is identical to 'http_access' and the other lists of
-#	ACL elements.  See the comments for 'http_access' below, or
-#	the Squid FAQ (http://www.squid-cache.org/FAQ/FAQ-10.html).
-#
+#  TAG: mail_from
+#	From: email-address for mail sent when the cache dies.
+#	The default is to use 'appname@unique_hostname'.
+#	Default appname value is "squid", can be changed into
+#	src/globals.h before building squid.
 #Default:
 # none
 
-#  TAG: proxy_auth_realm
-#	Specifies the realm name which is to be reported to the client for
-#	proxy authentication (part of the text the user will see when
-#	prompted their username and password).
+#  TAG: mail_program
+#	Email program used to send mail if the cache dies.
+#	The default is "mail". The specified program must comply
+#	with the standard Unix mail syntax:
+#	  mail-program recipient < mailfile
 #
+#	Optional command line options can be specified.
 #Default:
-# proxy_auth_realm Squid proxy-caching web server
+# mail_program mail
 
-#  TAG: ident_lookup_access
-#	A list of ACL elements which, if matched, cause an ident
-#	(RFC 931) lookup to be performed for this request.  For
-#	example, you might choose to always perform ident lookups
-#	for your main multi-user Unix boxes, but not for your Macs
-#	and PCs.  By default, ident lookups are not performed for
-#	any requests.
-#
-#	To enable ident lookups for specific client addresses, you
-#	can follow this example:
-# 
-#	acl ident_aware_hosts src 198.168.1.0/255.255.255.0
-#	ident_lookup_access allow ident_aware_hosts
-#	ident_lookup_access deny all
-#
-#	This option may be disabled by using --disable-ident with
-#	the configure script.
-#
+#  TAG: cache_effective_user
+#	If you start Squid as root, it will change its effective/real
+#	UID/GID to the user specified below.  The default is to change
+#	to UID of squid.
+#	see also; cache_effective_group
 #Default:
-# ident_lookup_access deny all
-
-
-# ADMINISTRATIVE PARAMETERS
-# -----------------------------------------------------------------------------
-
-#  TAG: cache_mgr
-#	Email-address of local cache manager who will receive
-#	mail if the cache dies.  The default is "webmaster."
+# cache_effective_user squid
 #
-#Default:
-# cache_mgr root
+cache_effective_user squid
 
-#  TAG: cache_effective_user
 #  TAG: cache_effective_group
+#	Squid sets the GID to the effective user's default group ID
+#	(taken from the password file) and supplementary group list
+#	from the groups membership.
 #
-#	If the cache is run as root, it will change its effective/real
-#	UID/GID to the UID/GID specified below.  The default is to
-#	change to UID to nobody and GID to nobody.
+#	If you want Squid to run with a specific GID regardless of
+#	the group memberships of the effective user then set this
+#	to the group (or GID) you want Squid to run as. When set
+#	all other group privileges of the effective user are ignored
+#	and only this GID is effective. If Squid is not started as
+#	root the user starting Squid MUST be member of the specified
+#	group.
 #
-#	If Squid is not started as root, the default is to keep the
-#	current UID/GID.  Note that if Squid is not started as root then
-#	you cannot set http_port to a value lower than 1024.
+#	This option is not recommended by the Squid Team.
+#	Our preference is for administrators to configure a secure
+#	user account for squid with UID/GID matching system policies.
+#Default:
+# cache_effective_group squid
 #
+cache_effective_group squid
+
+#  TAG: httpd_suppress_version_string	on|off
+#	Suppress Squid version string info in HTTP headers and HTML error pages.
 #Default:
-# cache_effective_user nobody
-# cache_effective_group nobody
+# httpd_suppress_version_string off
 
 #  TAG: visible_hostname
 #	If you want to present a special hostname in error messages, etc,
-#	then define this.  Otherwise, the return value of gethostname()
+#	define this.  Otherwise, the return value of gethostname()
 #	will be used. If you have multiple caches in a cluster and
 #	get errors about IP-forwarding you must set them to have individual
 #	names with this setting.
-#
 #Default:
-# none
+# visible_hostname unconfigured
 
 #  TAG: unique_hostname
 #	If you want to have multiple machines with the same
-#	'visible_hostname' then you must give each machine a different
-#	'unique_hostname' so that forwarding loops can be detected.
-#
+#	'visible_hostname' you must give each machine a different
+#	'unique_hostname' so forwarding loops can be detected.
 #Default:
 # none
 
 #  TAG: hostname_aliases
-#	A list of other DNS names that your cache has.
-#
+#	A list of other DNS names your cache has.
 #Default:
 # none
 
+#  TAG: umask
+#	Minimum umask which should be enforced while the proxy
+#	is running, in addition to the umask set at startup.
+#
+#	For a traditional octal representation of umasks, start
+#        your value with 0.
+#Default:
+# umask 027
 
 # OPTIONS FOR THE CACHE REGISTRATION SERVICE
 # -----------------------------------------------------------------------------
@@ -1603,17 +4370,21 @@ icp_access allow all
 #	default is `0' which disables sending the announcement
 #	messages.
 #
-#	To enable announcing your cache, just uncomment the line
-#	below.
+#	To enable announcing your cache, just set an announce period.
 #
+#	Example:
+#		announce_period 1 day
 #Default:
 # announce_period 0
-#
-#To enable announcing your cache, just uncomment the line below.
-#announce_period 1 day
 
 #  TAG: announce_host
+#Default:
+# announce_host tracker.ircache.net
+
 #  TAG: announce_file
+#Default:
+# none
+
 #  TAG: announce_port
 #	announce_host and announce_port set the hostname and port
 #	number where the registration message will be sent.
@@ -1622,333 +4393,693 @@ icp_access allow all
 #	default default to 3131.  If the 'filename' argument is given,
 #	the contents of that file will be included in the announce
 #	message.
-#
 #Default:
-# announce_host tracker.ircache.net
 # announce_port 3131
 
-
 # HTTPD-ACCELERATOR OPTIONS
 # -----------------------------------------------------------------------------
 
-#  TAG: httpd_accel_host
-#  TAG: httpd_accel_port
-#	If you want to run Squid as an httpd accelerator, define the
-#	host name and port number where the real HTTP server is.
+#  TAG: httpd_accel_surrogate_id
+#	Surrogates (http://www.esi.org/architecture_spec_1.0.html)
+#	need an identification token to allow control targeting. Because
+#	a farm of surrogates may all perform the same tasks, they may share
+#	an identification token.
 #
-#	If you want virtual host support then specify the hostname
-#	as "virtual".
-#
-#	If you want virtual port support then specify the port as "0".
-#
-#	NOTE: enabling httpd_accel_host disables proxy-caching and
-#	ICP.  If you want these features enabled also, then set
-#	the 'httpd_accel_with_proxy' option.
+#	The default ID is the visible_hostname
+#Default:
+# none
+
+#  TAG: http_accel_surrogate_remote	on|off
+#	Remote surrogates (such as those in a CDN) honour Surrogate-Control: no-store-remote.
+#	Set this to on to have squid behave as a remote surrogate.
+#Default:
+# http_accel_surrogate_remote off
+
+#  TAG: esi_parser	libxml2|expat|custom
+# Note: This option is only available if Squid is rebuilt with the
+#       --enable-esi
 #
+#	ESI markup is not strictly XML compatible. The custom ESI parser
+#	will give higher performance, but cannot handle non ASCII character
+#	encodings.
 #Default:
-# httpd_accel_port 80
+# esi_parser custom
 
-#  TAG: httpd_accel_single_host	on|off
-#	If you are running Squid as a accelerator and have a single backend
-#	server then set this to on. This causes Squid to forward the request
-#	to this server irregardles of what any redirectors or Host headers
-#	says.
+# DELAY POOL PARAMETERS
+# -----------------------------------------------------------------------------
+
+#  TAG: delay_pools
+#	This represents the number of delay pools to be used.  For example,
+#	if you have one class 2 delay pool and one class 3 delays pool, you
+#	have a total of 2 delay pools.
+#Default:
+# delay_pools 0
+
+#  TAG: delay_class
+#	This defines the class of each delay pool.  There must be exactly one
+#	delay_class line for each delay pool.  For example, to define two
+#	delay pools, one of class 2 and one of class 3, the settings above
+#	and here would be:
+#
+#	Example:
+#	    delay_pools 4      # 4 delay pools
+#	    delay_class 1 2    # pool 1 is a class 2 pool
+#	    delay_class 2 3    # pool 2 is a class 3 pool
+#	    delay_class 3 4    # pool 3 is a class 4 pool
+#	    delay_class 4 5    # pool 4 is a class 5 pool
 #
-#	Leave this at off if you have multiple backend servers, and use a
-#	redirector (or host table or private DNS) to map the requests to the
-#	appropriate backend servers. Note that the mapping needs to be a
-#	1-1 mapping between requested and backend (from redirector) domain
-#	names or caching will fail, as cacing is performed using the
-#	URL returned from the redirector.
+#	The delay pool classes are:
 #
-#	See also redirect_rewrites_host_header.
+#		class 1		Everything is limited by a single aggregate
+#				bucket.
 #
+#		class 2 	Everything is limited by a single aggregate
+#				bucket as well as an "individual" bucket chosen
+#				from bits 25 through 32 of the IPv4 address.
+#
+#		class 3		Everything is limited by a single aggregate
+#				bucket as well as a "network" bucket chosen
+#				from bits 17 through 24 of the IP address and a
+#				"individual" bucket chosen from bits 17 through
+#				32 of the IPv4 address.
+#
+#		class 4		Everything in a class 3 delay pool, with an
+#				additional limit on a per user basis. This
+#				only takes effect if the username is established
+#				in advance - by forcing authentication in your
+#				http_access rules.
+#
+#		class 5		Requests are grouped according their tag (see
+#				external_acl's tag= reply).
+#
+#
+#	Each pool also requires a delay_parameters directive to configure the pool size
+#	and speed limits used whenever the pool is applied to a request. Along with
+#	a set of delay_access directives to determine when it is used.
+#
+#	NOTE: If an IP address is a.b.c.d
+#		-> bits 25 through 32 are "d"
+#		-> bits 17 through 24 are "c"
+#		-> bits 17 through 32 are "c * 256 + d"
+#
+#	NOTE-2: Due to the use of bitmasks in class 2,3,4 pools they only apply to
+#		IPv4 traffic. Class 1 and 5 pools may be used with IPv6 traffic.
 #Default:
-# httpd_accel_single_host off
+# none
 
-#  TAG: httpd_accel_with_proxy	on|off
-#	If you want to use Squid as both a local httpd accelerator
-#	and as a proxy, change this to 'on'. Note however that your
-#	proxy users may have trouble to reach the accelerated domains
-#	unless their browsers are configured not to use this proxy for
-#	those domains (for example via the no_proxy browser configuration
-#	setting)
+#  TAG: delay_access
+#	This is used to determine which delay pool a request falls into.
+#
+#	delay_access is sorted per pool and the matching starts with pool 1,
+#	then pool 2, ..., and finally pool N. The first delay pool where the
+#	request is allowed is selected for the request. If it does not allow
+#	the request to any pool then the request is not delayed (default).
 #
+#	For example, if you want some_big_clients in delay
+#	pool 1 and lotsa_little_clients in delay pool 2:
+#
+#Example:
+# delay_access 1 allow some_big_clients
+# delay_access 1 deny all
+# delay_access 2 allow lotsa_little_clients
+# delay_access 2 deny all
+# delay_access 3 allow authenticated_clients
 #Default:
-# httpd_accel_with_proxy off
+# none
 
-#  TAG: httpd_accel_uses_host_header	on|off
-#	HTTP/1.1 requests include a Host: header which is basically the
-#	hostname from the URL.  Squid can be an accelerator for
-#	different HTTP servers by looking at this header.  However,
-#	Squid does NOT check the value of the Host header, so it opens
-#	a big security hole.  We recommend that this option remain
-#	disabled unless you are sure of what you are doing.
+#  TAG: delay_parameters
+#	This defines the parameters for a delay pool.  Each delay pool has
+#	a number of "buckets" associated with it, as explained in the
+#	description of delay_class.
+#
+#	For a class 1 delay pool, the syntax is:
+#		delay_pools pool 1
+#		delay_parameters pool aggregate
+#
+#	For a class 2 delay pool:
+#		delay_pools pool 2
+#		delay_parameters pool aggregate individual
+#
+#	For a class 3 delay pool:
+#		delay_pools pool 3
+#		delay_parameters pool aggregate network individual
+#
+#	For a class 4 delay pool:
+#		delay_pools pool 4
+#		delay_parameters pool aggregate network individual user
+#
+#	For a class 5 delay pool:
+#		delay_pools pool 5
+#		delay_parameters pool tagrate
+#
+#	The option variables are:
+#
+#		pool		a pool number - ie, a number between 1 and the
+#				number specified in delay_pools as used in
+#				delay_class lines.
+#
+#		aggregate	the speed limit parameters for the aggregate bucket
+#				(class 1, 2, 3).
+#
+#		individual	the speed limit parameters for the individual
+#				buckets (class 2, 3).
+#
+#		network		the speed limit parameters for the network buckets
+#				(class 3).
+#
+#		user		the speed limit parameters for the user buckets
+#				(class 4).
+#
+#		tagrate		the speed limit parameters for the tag buckets
+#				(class 5).
+#
+#	A pair of delay parameters is written restore/maximum, where restore is
+#	the number of bytes (not bits - modem and network speeds are usually
+#	quoted in bits) per second placed into the bucket, and maximum is the
+#	maximum number of bytes which can be in the bucket at any time.
 #
-#	However, you will need to enable this option if you run Squid
-#	as a transparent proxy.  Otherwise, virtual servers which
-#	require the Host: header will not be properly cached.
+#	There must be one delay_parameters line for each delay pool.
+#
+#
+#	For example, if delay pool number 1 is a class 2 delay pool as in the
+#	above example, and is being used to strictly limit each host to 64Kbit/sec
+#	(plus overheads), with no overall limit, the line is:
+#
+#		delay_parameters 1 -1/-1 8000/8000
 #
+#	Note that 8 x 8000 KByte/sec -> 64Kbit/sec.
+#
+#	Note that the figure -1 is used to represent "unlimited".
+#
+#
+#	And, if delay pool number 2 is a class 3 delay pool as in the above
+#	example, and you want to limit it to a total of 256Kbit/sec (strict limit)
+#	with each 8-bit network permitted 64Kbit/sec (strict limit) and each
+#	individual host permitted 4800bit/sec with a bucket maximum size of 64Kbits
+#	to permit a decent web page to be downloaded at a decent speed
+#	(if the network is not being limited due to overuse) but slow down
+#	large downloads more significantly:
+#
+#		delay_parameters 2 32000/32000 8000/8000 600/8000
+#
+#	Note that 8 x 32000 KByte/sec -> 256Kbit/sec.
+#		  8 x  8000 KByte/sec ->  64Kbit/sec.
+#		  8 x   600 Byte/sec  -> 4800bit/sec.
+#
+#
+#	Finally, for a class 4 delay pool as in the example - each user will
+#	be limited to 128Kbits/sec no matter how many workstations they are logged into.:
+#
+#		delay_parameters 4 32000/32000 8000/8000 600/64000 16000/16000
 #Default:
-# httpd_accel_uses_host_header off
+# none
 
+#  TAG: delay_initial_bucket_level	(percent, 0-100)
+#	The initial bucket percentage is used to determine how much is put
+#	in each bucket when squid starts, is reconfigured, or first notices
+#	a host accessing it (in class 2 and class 3, individual hosts and
+#	networks only have buckets associated with them once they have been
+#	"seen" by squid).
+#Default:
+# delay_initial_bucket_level 50
 
-# MISCELLANEOUS
+# CLIENT DELAY POOL PARAMETERS
 # -----------------------------------------------------------------------------
 
-#  TAG: dns_testnames
-#	The DNS tests exit as soon as the first site is successfully looked up
-#
-#	This test can be disabled with the -D command line option.
+#  TAG: client_delay_pools
+#	This option specifies the number of client delay pools used. It must
+#	preceed other client_delay_* options.
 #
+#Example:
+# client_delay_pools 2
 #Default:
-# dns_testnames netscape.com internic.net nlanr.net microsoft.com
+# client_delay_pools 0
 
-#  TAG: logfile_rotate
-#	Specifies the number of logfile rotations to make when you
-#	type 'squid -k rotate'.  The default is 10, which will rotate
-#	with extensions 0 through 9.  Setting logfile_rotate to 0 will
-#	disable the rotation, but the logfiles are still closed and
-#	re-opened.  This will enable you to rename the logfiles
-#	yourself just before sending the rotate signal.
+#  TAG: client_delay_initial_bucket_level	(percent, 0-no_limit)
+#	This option determines the initial bucket size as a percentage of
+#	max_bucket_size from client_delay_parameters. Buckets are created
+#	at the time of the "first" connection from the matching IP. Idle
+#	buckets are periodically deleted up.
 #
-#	Note, the 'squid -k rotate' command normally sends a USR1
-#	signal to the running squid process.  In certain situations
-#	(e.g. on Linux with Async I/O), USR1 is used for other
-#	purposes, so -k rotate uses another signal.  It is best to get
-#	in the habit of using 'squid -k rotate' instead of 'kill -USR1
-#	<pid>'.
+#	You can specify more than 100 percent but note that such "oversized"
+#	buckets are not refilled until their size goes down to max_bucket_size
+#	from client_delay_parameters.
 #
+#Example:
+# client_delay_initial_bucket_level 50
 #Default:
-# logfile_rotate 0
+# client_delay_initial_bucket_level 50
 
-#  TAG: append_domain
-#	Appends local domain name to hostnames without any dots in
-#	them.  append_domain must begin with a period.
+#  TAG: client_delay_parameters
+#
+#	This option configures client-side bandwidth limits using the
+#	following format:
+#
+#	    client_delay_parameters pool speed_limit max_bucket_size
+#
+#	pool is an integer ID used for client_delay_access matching.
+#
+#	speed_limit is bytes added to the bucket per second.
+#
+#	max_bucket_size is the maximum size of a bucket, enforced after any
+#	speed_limit additions.
+#
+#	Please see the delay_parameters option for more information and
+#	examples.
 #
 #Example:
-# append_domain .yourdomain.com
+# client_delay_parameters 1 1024 2048
+# client_delay_parameters 2 51200 16384
+#Default:
+# none
+
+#  TAG: client_delay_access
+#
+#	This option determines the client-side delay pool for the
+#	request:
+#
+#	    client_delay_access pool_ID allow|deny acl_name
 #
+#	All client_delay_access options are checked in their pool ID
+#	order, starting with pool 1. The first checked pool with allowed
+#	request is selected for the request. If no ACL matches or there
+#	are no client_delay_access options, the request bandwidth is not
+#	limited.
+#
+#	The ACL-selected pool is then used to find the
+#	client_delay_parameters for the request. Client-side pools are
+#	not used to aggregate clients. Clients are always aggregated
+#	based on their source IP addresses (one bucket per source IP).
+#
+#	Please see delay_access for more examples.
+#
+#Example:
+# client_delay_access 1 allow low_rate_network
+# client_delay_access 2 allow vips_network
 #Default:
 # none
 
-#  TAG: tcp_recv_bufsize	(bytes)
-#	Size of receive buffer to set for TCP sockets.  Probably just
-#	as easy to change your kernel's default.  Set to zero to use
-#	the default buffer size.
+# WCCPv1 AND WCCPv2 CONFIGURATION OPTIONS
+# -----------------------------------------------------------------------------
+
+#  TAG: wccp_router
+#	Use this option to define your WCCP ``home'' router for
+#	Squid.
+#
+#	wccp_router supports a single WCCP(v1) router
 #
+#	wccp2_router supports multiple WCCPv2 routers
+#
+#	only one of the two may be used at the same time and defines
+#	which version of WCCP to use.
 #Default:
-# tcp_recv_bufsize 0 bytes
+# wccp_router any_addr
 
-#  TAG: err_html_text
-#	HTML text to include in error messages.  Make this a "mailto"
-#	URL to your admin address, or maybe just a link to your
-#	organizations Web page.
+#  TAG: wccp2_router
+#	Use this option to define your WCCP ``home'' router for
+#	Squid.
 #
-#	To include this in your error messages, you must rewrite
-#	the error template files (found in the "errors" directory).
-#	Wherever you want the 'err_html_text' line to appear,
-#	insert a %L tag in the error template file.
+#	wccp_router supports a single WCCP(v1) router
+#
+#	wccp2_router supports multiple WCCPv2 routers
 #
+#	only one of the two may be used at the same time and defines
+#	which version of WCCP to use.
 #Default:
 # none
 
-#  TAG: deny_info
-#	Usage:   deny_info err_page_name acl
-#	Example: deny_info ERR_CUSTOM_ACCESS_DENIED bad_guys
+#  TAG: wccp_version
+#	This directive is only relevant if you need to set up WCCP(v1)
+#	to some very old and end-of-life Cisco routers. In all other
+#	setups it must be left unset or at the default setting.
+#	It defines an internal version in the WCCP(v1) protocol,
+#	with version 4 being the officially documented protocol.
 #
-#	This can be used to return a ERR_ page for requests which
-#	do not pass the 'http_access' rules.  A single ACL will cause
-#	the http_access check to fail.  If a 'deny_info' line exists
-#	for that ACL then Squid returns a corresponding error page.
+#	According to some users, Cisco IOS 11.2 and earlier only
+#	support WCCP version 3.  If you're using that or an earlier
+#	version of IOS, you may need to change this value to 3, otherwise
+#	do not specify this parameter.
+#Default:
+# wccp_version 4
+
+#  TAG: wccp2_rebuild_wait
+#	If this is enabled Squid will wait for the cache dir rebuild to finish
+#	before sending the first wccp2 HereIAm packet
+#Default:
+# wccp2_rebuild_wait on
+
+#  TAG: wccp2_forwarding_method
+#	WCCP2 allows the setting of forwarding methods between the
+#	router/switch and the cache.  Valid values are as follows:
 #
-#	You may use ERR_ pages that come with Squid or create your own pages
-#	and put them into the configured errors/ directory.
+#	gre - GRE encapsulation (forward the packet in a GRE/WCCP tunnel)
+#	l2  - L2 redirect (forward the packet using Layer 2/MAC rewriting)
 #
+#	Currently (as of IOS 12.4) cisco routers only support GRE.
+#	Cisco switches only support the L2 redirect assignment method.
 #Default:
-# none
+# wccp2_forwarding_method gre
 
-#  TAG: memory_pools	on|off
-#	If set, Squid will keep pools of allocated (but unused) memory
-#	available for future use.  If memory is a premium on your
-#	system and you believe your malloc library outperforms Squid 
-#	routines, disable this.
+#  TAG: wccp2_return_method
+#	WCCP2 allows the setting of return methods between the
+#	router/switch and the cache for packets that the cache
+#	decides not to handle.  Valid values are as follows:
+#
+#	gre - GRE encapsulation (forward the packet in a GRE/WCCP tunnel)
+#	l2  - L2 redirect (forward the packet using Layer 2/MAC rewriting)
+#
+#	Currently (as of IOS 12.4) cisco routers only support GRE.
+#	Cisco switches only support the L2 redirect assignment.
 #
+#	If the "ip wccp redirect exclude in" command has been
+#	enabled on the cache interface, then it is still safe for
+#	the proxy server to use a l2 redirect method even if this
+#	option is set to GRE.
 #Default:
-# memory_pools on
+# wccp2_return_method gre
 
-#  TAG: memory_pools_limit	(bytes)
-#	Used only with memory_pools on:
-#	memory_pools_limit 50 MB
+#  TAG: wccp2_assignment_method
+#	WCCP2 allows the setting of methods to assign the WCCP hash
+#	Valid values are as follows:
 #
-#	If set to a non-zero value, Squid will keep at most the specified
-#	limit of allocated (but unused) memory in memory pools. All free()
-#	requests that exceed this limit will be handled by your malloc
-#	library. Squid does not pre-allocate any memory, just safe-keeps
-#	objects that otherwise would be free()d. Thus, it is safe to set
-#	memory_pools_limit to a reasonably high value even if your
-#	configuration will use less memory.
+#	hash - Hash assignment
+#	mask - Mask assignment
 #
-#	If not set (default) or set to zero, Squid will keep all memory it
-#	can. That is, there will be no limit on the total amount of memory
-#	used for safe-keeping.
+#	As a general rule, cisco routers support the hash assignment method
+#	and cisco switches support the mask assignment method.
+#Default:
+# wccp2_assignment_method hash
+
+#  TAG: wccp2_service
+#	WCCP2 allows for multiple traffic services. There are two
+#	types: "standard" and "dynamic". The standard type defines
+#	one service id - http (id 0). The dynamic service ids can be from
+#	51 to 255 inclusive.  In order to use a dynamic service id
+#	one must define the type of traffic to be redirected; this is done
+#	using the wccp2_service_info option.
 #
-#	To disable memory allocation optimization, do not set
-#	memory_pools_limit to 0. Set memory_pools to "off" instead.
+#	The "standard" type does not require a wccp2_service_info option,
+#	just specifying the service id will suffice.
 #
-#	An overhead for maintaining memory pools is not taken into account
-#	when the limit is checked. This overhead is close to four bytes per
-#	object kept. However, pools may actually _save_ memory because of
-#	reduced memory thrashing in your malloc library.
+#	MD5 service authentication can be enabled by adding
+#	"password=<password>" to the end of this service declaration.
+#
+#	Examples:
 #
+#	wccp2_service standard 0	# for the 'web-cache' standard service
+#	wccp2_service dynamic 80	# a dynamic service type which will be
+#					# fleshed out with subsequent options.
+#	wccp2_service standard 0 password=foo
 #Default:
-# none
+# wccp2_service standard 0
 
-#  TAG: forwarded_for	on|off
-#	If set, Squid will include your system's IP address or name
-#	in the HTTP requests it forwards.  By default it looks like
-#	this:
+#  TAG: wccp2_service_info
+#	Dynamic WCCPv2 services require further information to define the
+#	traffic you wish to have diverted.
 #
-#		X-Forwarded-For: 192.1.2.3
+#	The format is:
 #
-#	If you disable this, it will appear as
+#	wccp2_service_info <id> protocol=<protocol> flags=<flag>,<flag>..
+#	    priority=<priority> ports=<port>,<port>..
 #
-#		X-Forwarded-For: unknown
+#	The relevant WCCPv2 flags:
+#	+ src_ip_hash, dst_ip_hash
+#	+ source_port_hash, dst_port_hash
+#	+ src_ip_alt_hash, dst_ip_alt_hash
+#	+ src_port_alt_hash, dst_port_alt_hash
+#	+ ports_source
+#
+#	The port list can be one to eight entries.
+#
+#	Example:
 #
+#	wccp2_service_info 80 protocol=tcp flags=src_ip_hash,ports_source
+#	    priority=240 ports=80
+#
+#	Note: the service id must have been defined by a previous
+#	'wccp2_service dynamic <id>' entry.
 #Default:
-# forwarded_for on
+# none
 
-#  TAG: log_icp_queries	on|off
-#	If set, ICP queries are logged to access.log. You may wish
-#	do disable this if your ICP load is VERY high to speed things
-#	up or to simplify log analysis.
+#  TAG: wccp2_weight
+#	Each cache server gets assigned a set of the destination
+#	hash proportional to their weight.
+#Default:
+# wccp2_weight 10000
+
+#  TAG: wccp_address
+#Default:
+# wccp_address 0.0.0.0
+
+#  TAG: wccp2_address
+#	Use this option if you require WCCP to use a specific
+#	interface address.
 #
+#	The default behavior is to not bind to any specific address.
 #Default:
-# log_icp_queries on
+# wccp2_address 0.0.0.0
 
-#  TAG: icp_hit_stale	on|off
-#	If you want to return ICP_HIT for stale cache objects, set this
-#	option to 'on'.  If you have sibling relationships with caches
-#	in other administrative domains, this should be 'off'.  If you only
-#	have sibling relationships with caches under your control, then
-#	it is probably okay to set this to 'on'.
+# PERSISTENT CONNECTION HANDLING
+# -----------------------------------------------------------------------------
 #
+# Also see "pconn_timeout" in the TIMEOUTS section
+
+#  TAG: client_persistent_connections
 #Default:
-# icp_hit_stale off
+# client_persistent_connections on
 
-#  TAG: minimum_direct_hops
-#	If using the ICMP pinging stuff, do direct fetches for sites
-#	which are no more than this many hops away.
+#  TAG: server_persistent_connections
+#	Persistent connection support for clients and servers.  By
+#	default, Squid uses persistent connections (when allowed)
+#	with its clients and servers.  You can use these options to
+#	disable persistent connections with clients and/or servers.
+#Default:
+# server_persistent_connections on
+
+#  TAG: persistent_connection_after_error
+#	With this directive the use of persistent connections after
+#	HTTP errors can be disabled. Useful if you have clients
+#	who fail to handle errors on persistent connections proper.
+#Default:
+# persistent_connection_after_error on
+
+#  TAG: detect_broken_pconn
+#	Some servers have been found to incorrectly signal the use
+#	of HTTP/1.0 persistent connections even on replies not
+#	compatible, causing significant delays. This server problem
+#	has mostly been seen on redirects.
 #
+#	By enabling this directive Squid attempts to detect such
+#	broken replies and automatically assume the reply is finished
+#	after 10 seconds timeout.
 #Default:
-# minimum_direct_hops 4
+# detect_broken_pconn off
 
-#  TAG: minimum_direct_rtt
-#	If using the ICMP pinging stuff, do direct fetches for sites
-#	which are no more than this many rtt milliseconds away.
+# CACHE DIGEST OPTIONS
+# -----------------------------------------------------------------------------
+
+#  TAG: digest_generation
+#	This controls whether the server will generate a Cache Digest
+#	of its contents.  By default, Cache Digest generation is
+#	enabled if Squid is compiled with --enable-cache-digests defined.
+#Default:
+# digest_generation on
+
+#  TAG: digest_bits_per_entry
+#	This is the number of bits of the server's Cache Digest which
+#	will be associated with the Digest entry for a given HTTP
+#	Method and URL (public key) combination.  The default is 5.
+#Default:
+# digest_bits_per_entry 5
+
+#  TAG: digest_rebuild_period	(seconds)
+#	This is the wait time between Cache Digest rebuilds.
+#Default:
+# digest_rebuild_period 1 hour
+
+#  TAG: digest_rewrite_period	(seconds)
+#	This is the wait time between Cache Digest writes to
+#	disk.
+#Default:
+# digest_rewrite_period 1 hour
+
+#  TAG: digest_swapout_chunk_size	(bytes)
+#	This is the number of bytes of the Cache Digest to write to
+#	disk at a time.  It defaults to 4096 bytes (4KB), the Squid
+#	default swap page.
+#Default:
+# digest_swapout_chunk_size 4096 bytes
+
+#  TAG: digest_rebuild_chunk_percentage	(percent, 0-100)
+#	This is the percentage of the Cache Digest to be scanned at a
+#	time.  By default it is set to 10% of the Cache Digest.
+#Default:
+# digest_rebuild_chunk_percentage 10
+
+# SNMP OPTIONS
+# -----------------------------------------------------------------------------
+
+#  TAG: snmp_port
+#	The port number where Squid listens for SNMP requests. To enable
+#	SNMP support set this to a suitable port number. Port number
+#	3401 is often used for the Squid SNMP agent. By default it's
+#	set to "0" (disabled)
 #
+#	Example:
+#		snmp_port 3401
 #Default:
-# minimum_direct_rtt 400
+# snmp_port 0
 
-#  TAG: cachemgr_passwd
-#	Specify passwords for cachemgr operations.
+#  TAG: snmp_access
+#	Allowing or denying access to the SNMP port.
 #
-#	Usage: cachemgr_passwd password action action ...
+#	All access to the agent is denied by default.
+#	usage:
 #
-#	Some valid actions are (see cache manager menu for a full list):
-#		5min
-#		60min
-#		asndb
-#		authenticator
-#		cbdata
-#		client_list
-#		comm_incoming
-#		config *
-#		counters
-#		delay
-#		digest_stats
-#		dns
-#		events
-#		filedescriptors
-#		fqdncache
-#		histograms
-#		http_headers
-#		info
-#		io
-#		ipcache
-#		mem
-#		menu
-#		netdb
-#		non_peers
-#		objects
-#		pconn
-#		peer_select
-#		redirector
-#		refresh
-#		server_list
-#		shutdown *
-#		store_digest
-#		storedir
-#		utilization
-#		via_headers
-#		vm_objects
+#	snmp_access allow|deny [!]aclname ...
 #
-#	* Indicates actions which will not be performed without a
-#	  valid password, others can be performed if not listed here.
+#	This clause only supports fast acl types.
+#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
+#Example:
+# snmp_access allow snmppublic localhost
+# snmp_access deny all
+#Default:
+# snmp_access deny all
+
+#  TAG: snmp_incoming_address
+#Default:
+# snmp_incoming_address any_addr
+
+#  TAG: snmp_outgoing_address
+#	Just like 'udp_incoming_address', but for the SNMP port.
 #
-#	To disable an action, set the password to "disable".
-#	To allow performing an action without a password, set the
-#	password to "none".
+#	snmp_incoming_address	is used for the SNMP socket receiving
+#				messages from SNMP agents.
+#	snmp_outgoing_address	is used for SNMP packets returned to SNMP
+#				agents.
 #
-#	Use the keyword "all" to set the same password for all actions.
+#	The default snmp_incoming_address is to listen on all
+#	available network interfaces.
 #
-#Example:
-# cachemgr_passwd secret shutdown
-# cachemgr_passwd lesssssssecret info stats/objects
-# cachemgr_passwd disable all
+#	If snmp_outgoing_address is not set it will use the same socket
+#	as snmp_incoming_address. Only change this if you want to have
+#	SNMP replies sent using another address than where this Squid
+#	listens for SNMP queries.
 #
+#	NOTE, snmp_incoming_address and snmp_outgoing_address can not have
+#	the same value since they both use port 3401.
 #Default:
-# none
+# snmp_outgoing_address no_addr
 
-#  TAG: store_avg_object_size	(kbytes)
-#	Average object size, used to estimate number of objects your
-#	cache can hold.  See doc/Release-Notes-1.1.txt.  The default is
-#	13 KB.
+# ICP OPTIONS
+# -----------------------------------------------------------------------------
+
+#  TAG: icp_port
+#	The port number where Squid sends and receives ICP queries to
+#	and from neighbor caches.  The standard UDP port for ICP is 3130.
+#	Default is disabled (0).
 #
+#	Example:
+#		icp_port 3130
 #Default:
-# store_avg_object_size 13 KB
+# icp_port 0
 
-#  TAG: store_objects_per_bucket
-#	Target number of objects per bucket in the store hash table.
-#	Lowering this value increases the total number of buckets and
-#	also the storage maintenance rate.  The default is 50.
+#  TAG: htcp_port
+#	The port number where Squid sends and receives HTCP queries to
+#	and from neighbor caches.  To turn it on you want to set it to
+#	4827. By default it is set to "0" (disabled).
 #
+#	Example:
+#		htcp_port 4827
 #Default:
-# store_objects_per_bucket 20
+# htcp_port 0
 
-#  TAG: client_db	on|off
-#	If you want to disable collecting per-client statistics, then
-#	turn off client_db here.
+#  TAG: log_icp_queries	on|off
+#	If set, ICP queries are logged to access.log. You may wish
+#	do disable this if your ICP load is VERY high to speed things
+#	up or to simplify log analysis.
+#Default:
+# log_icp_queries on
+
+#  TAG: udp_incoming_address
+#	udp_incoming_address	is used for UDP packets received from other
+#				caches.
+#
+#	The default behavior is to not bind to any specific address.
 #
+#	Only change this if you want to have all UDP queries received on
+#	a specific interface/address.
+#
+#	NOTE: udp_incoming_address is used by the ICP, HTCP, and DNS
+#	modules. Altering it will affect all of them in the same manner.
+#
+#	see also; udp_outgoing_address
+#
+#	NOTE, udp_incoming_address and udp_outgoing_address can not
+#	have the same value since they both use the same port.
 #Default:
-# client_db on
+# udp_incoming_address any_addr
+
+#  TAG: udp_outgoing_address
+#	udp_outgoing_address	is used for UDP packets sent out to other
+#				caches.
+#
+#	The default behavior is to not bind to any specific address.
+#
+#	Instead it will use the same socket as udp_incoming_address.
+#	Only change this if you want to have UDP queries sent using another
+#	address than where this Squid listens for UDP queries from other
+#	caches.
+#
+#	NOTE: udp_outgoing_address is used by the ICP, HTCP, and DNS
+#	modules. Altering it will affect all of them in the same manner.
+#
+#	see also; udp_incoming_address
+#
+#	NOTE, udp_incoming_address and udp_outgoing_address can not
+#	have the same value since they both use the same port.
+#Default:
+# udp_outgoing_address no_addr
+
+#  TAG: icp_hit_stale	on|off
+#	If you want to return ICP_HIT for stale cache objects, set this
+#	option to 'on'.  If you have sibling relationships with caches
+#	in other administrative domains, this should be 'off'.  If you only
+#	have sibling relationships with caches under your control,
+#	it is probably okay to set this to 'on'.
+#	If set to 'on', your siblings should use the option "allow-miss"
+#	on their cache_peer lines for connecting to you.
+#Default:
+# icp_hit_stale off
+
+#  TAG: minimum_direct_hops
+#	If using the ICMP pinging stuff, do direct fetches for sites
+#	which are no more than this many hops away.
+#Default:
+# minimum_direct_hops 4
+
+#  TAG: minimum_direct_rtt
+#	If using the ICMP pinging stuff, do direct fetches for sites
+#	which are no more than this many rtt milliseconds away.
+#Default:
+# minimum_direct_rtt 400
 
 #  TAG: netdb_low
+#Default:
+# netdb_low 900
+
 #  TAG: netdb_high
 #	The low and high water marks for the ICMP measurement
 #	database.  These are counts, not percents.  The defaults are
 #	900 and 1000.  When the high water mark is reached, database
 #	entries will be deleted until the low mark is reached.
-#
 #Default:
-# netdb_low 900
 # netdb_high 1000
 
 #  TAG: netdb_ping_period
 #	The minimum period for measuring a site.  There will be at
 #	least this much delay between successive pings to the same
 #	network.  The default is five minutes.
-#
 #Default:
 # netdb_ping_period 5 minutes
 
@@ -1957,14 +5088,13 @@ icp_access allow all
 #	replies, enable this option.
 #
 #	If your peer has configured Squid (during compilation) with
-#	'--enable-icmp' then that peer will send ICMP pings to origin server
-#	sites of the URLs it receives.  If you enable this option then the
+#	'--enable-icmp' that peer will send ICMP pings to origin server
+#	sites of the URLs it receives.  If you enable this option the
 #	ICP replies from that peer will include the ICMP data (if available).
 #	Then, when choosing a parent cache, Squid will choose the parent with
 #	the minimal RTT to the origin server.  When this happens, the
 #	hierarchy field of the access.log will be
 #	"CLOSEST_PARENT_MISS".  This option is off by default.
-#
 #Default:
 # query_icmp off
 
@@ -1972,41 +5102,332 @@ icp_access allow all
 #	When this is 'on', ICP MISS replies will be ICP_MISS_NOFETCH
 #	instead of ICP_MISS if the target host is NOT in the ICMP
 #	database, or has a zero RTT.
-#
 #Default:
 # test_reachability off
 
-#  TAG: buffered_logs	on|off
-#	Some log files (cache.log, useragent.log) are written with
-#	stdio functions, and as such they can be buffered or
-#	unbuffered.  By default they will be unbuffered. Buffering them
-#	can speed up the writing slightly (though you are unlikely to
-#	need to worry).
+#  TAG: icp_query_timeout	(msec)
+#	Normally Squid will automatically determine an optimal ICP
+#	query timeout value based on the round-trip-time of recent ICP
+#	queries.  If you want to override the value determined by
+#	Squid, set this 'icp_query_timeout' to a non-zero value.  This
+#	value is specified in MILLISECONDS, so, to use a 2-second
+#	timeout (the old default), you would write:
 #
+#		icp_query_timeout 2000
 #Default:
-# buffered_logs off
+# icp_query_timeout 0
 
-#  TAG: reload_into_ims	on|off
-#	When you enable this option, client no-cache or ``reload''
-#	requests will be changed to If-Modified-Since requests.
-#	Doing this VIOLATES the HTTP standard.  Enabling this
-#	feature could make you liable for problems which it
-#	causes.
-#	
-#	see also refresh_pattern for a more selective approach.
+#  TAG: maximum_icp_query_timeout	(msec)
+#	Normally the ICP query timeout is determined dynamically.  But
+#	sometimes it can lead to very large values (say 5 seconds).
+#	Use this option to put an upper limit on the dynamic timeout
+#	value.  Do NOT use this option to always use a fixed (instead
+#	of a dynamic) timeout value. To set a fixed timeout see the
+#	'icp_query_timeout' directive.
+#Default:
+# maximum_icp_query_timeout 2000
+
+#  TAG: minimum_icp_query_timeout	(msec)
+#	Normally the ICP query timeout is determined dynamically.  But
+#	sometimes it can lead to very small timeouts, even lower than
+#	the normal latency variance on your link due to traffic.
+#	Use this option to put an lower limit on the dynamic timeout
+#	value.  Do NOT use this option to always use a fixed (instead
+#	of a dynamic) timeout value. To set a fixed timeout see the
+#	'icp_query_timeout' directive.
+#Default:
+# minimum_icp_query_timeout 5
+
+#  TAG: background_ping_rate	time-units
+#	Controls how often the ICP pings are sent to siblings that
+#	have background-ping set.
+#Default:
+# background_ping_rate 10 seconds
+
+# MULTICAST ICP OPTIONS
+# -----------------------------------------------------------------------------
+
+#  TAG: mcast_groups
+#	This tag specifies a list of multicast groups which your server
+#	should join to receive multicasted ICP queries.
 #
-#	This option may be disabled by using --disable-http-violations
-#	with the configure script.
+#	NOTE!  Be very careful what you put here!  Be sure you
+#	understand the difference between an ICP _query_ and an ICP
+#	_reply_.  This option is to be set only if you want to RECEIVE
+#	multicast queries.  Do NOT set this option to SEND multicast
+#	ICP (use cache_peer for that).  ICP replies are always sent via
+#	unicast, so this option does not affect whether or not you will
+#	receive replies from multicast group members.
+#
+#	You must be very careful to NOT use a multicast address which
+#	is already in use by another group of caches.
+#
+#	If you are unsure about multicast, please read the Multicast
+#	chapter in the Squid FAQ (http://www.squid-cache.org/FAQ/).
 #
+#	Usage: mcast_groups 239.128.16.128 224.0.1.20
+#
+#	By default, Squid doesn't listen on any multicast groups.
 #Default:
-# reload_into_ims off
+# none
+
+#  TAG: mcast_miss_addr
+# Note: This option is only available if Squid is rebuilt with the
+#       -DMULTICAST_MISS_STREAM define
+#
+#	If you enable this option, every "cache miss" URL will
+#	be sent out on the specified multicast address.
+#
+#	Do not enable this option unless you are are absolutely
+#	certain you understand what you are doing.
+#Default:
+# mcast_miss_addr no_addr
+
+#  TAG: mcast_miss_ttl
+# Note: This option is only available if Squid is rebuilt with the
+#       -DMULTICAST_MISS_STREAM define
+#
+#	This is the time-to-live value for packets multicasted
+#	when multicasting off cache miss URLs is enabled.  By
+#	default this is set to 'site scope', i.e. 16.
+#Default:
+# mcast_miss_ttl 16
+
+#  TAG: mcast_miss_port
+# Note: This option is only available if Squid is rebuilt with the
+#       -DMULTICAST_MISS_STREAM define
+#
+#	This is the port number to be used in conjunction with
+#	'mcast_miss_addr'.
+#Default:
+# mcast_miss_port 3135
+
+#  TAG: mcast_miss_encode_key
+# Note: This option is only available if Squid is rebuilt with the
+#       -DMULTICAST_MISS_STREAM define
+#
+#	The URLs that are sent in the multicast miss stream are
+#	encrypted.  This is the encryption key.
+#Default:
+# mcast_miss_encode_key XXXXXXXXXXXXXXXX
+
+#  TAG: mcast_icp_query_timeout	(msec)
+#	For multicast peers, Squid regularly sends out ICP "probes" to
+#	count how many other peers are listening on the given multicast
+#	address.  This value specifies how long Squid should wait to
+#	count all the replies.  The default is 2000 msec, or 2
+#	seconds.
+#Default:
+# mcast_icp_query_timeout 2000
+
+# INTERNAL ICON OPTIONS
+# -----------------------------------------------------------------------------
+
+#  TAG: icon_directory
+#	Where the icons are stored. These are normally kept in
+#	/usr/share/squid/icons
+#Default:
+# icon_directory /usr/share/squid/icons
+
+#  TAG: global_internal_static
+#	This directive controls is Squid should intercept all requests for
+#	/squid-internal-static/ no matter which host the URL is requesting
+#	(default on setting), or if nothing special should be done for
+#	such URLs (off setting). The purpose of this directive is to make
+#	icons etc work better in complex cache hierarchies where it may
+#	not always be possible for all corners in the cache mesh to reach
+#	the server generating a directory listing.
+#Default:
+# global_internal_static on
+
+#  TAG: short_icon_urls
+#	If this is enabled Squid will use short URLs for icons.
+#	If disabled it will revert to the old behavior of including
+#	it's own name and port in the URL.
+#
+#	If you run a complex cache hierarchy with a mix of Squid and
+#	other proxies you may need to disable this directive.
+#Default:
+# short_icon_urls on
+
+# ERROR PAGE OPTIONS
+# -----------------------------------------------------------------------------
+
+#  TAG: error_directory
+#	If you wish to create your own versions of the default
+#	error files to customize them to suit your company copy
+#	/usr/share/squid/errors contains sets of error files
+#        in different languages. The default error directory
+#        is /etc/squid/errors, which is a link to one of these
+#        error sets.
+#
+#	WARNING: This option will disable multi-language support
+#	         on error pages if used.
+#
+#	The squid developers are interested in making squid available in
+#	a wide variety of languages. If you are making translations for a
+#	language that Squid does not currently provide please consider
+#	contributing your translation back to the project.
+#	http://wiki.squid-cache.org/Translations
+#
+#	The squid developers working on translations are happy to supply drop-in
+#	translated error files in exchange for any new language contributions.
+#Default:
+# none
+
+#  TAG: error_default_language
+#	Set the default language which squid will send error pages in
+#	if no existing translation matches the clients language
+#	preferences.
+#
+#	If unset (default) generic English will be used.
+#
+#	The squid developers are interested in making squid available in
+#	a wide variety of languages. If you are interested in making
+#	translations for any language see the squid wiki for details.
+#	http://wiki.squid-cache.org/Translations
+#Default:
+# none
+
+#  TAG: error_log_languages
+#	Log to cache.log what languages users are attempting to
+#	auto-negotiate for translations.
+#
+#	Successful negotiations are not logged. Only failures
+#	have meaning to indicate that Squid may need an upgrade
+#	of its error page translations.
+#Default:
+# error_log_languages on
+
+#  TAG: err_page_stylesheet
+#	CSS Stylesheet to pattern the display of Squid default error pages.
+#
+#	For information on CSS see http://www.w3.org/Style/CSS/
+#Default:
+# err_page_stylesheet /etc/squid/errorpage.css
+
+#  TAG: err_html_text
+#	HTML text to include in error messages.  Make this a "mailto"
+#	URL to your admin address, or maybe just a link to your
+#	organizations Web page.
+#
+#	To include this in your error messages, you must rewrite
+#	the error template files (found in the "errors" directory).
+#	Wherever you want the 'err_html_text' line to appear,
+#	insert a %L tag in the error template file.
+#Default:
+# none
+
+#  TAG: email_err_data	on|off
+#	If enabled, information about the occurred error will be
+#	included in the mailto links of the ERR pages (if %W is set)
+#	so that the email body contains the data.
+#	Syntax is <A HREF="mailto:%w%W">%w</A>
+#Default:
+# email_err_data on
+
+#  TAG: deny_info
+#	Usage:   deny_info err_page_name acl
+#	or       deny_info http://... acl
+#	or       deny_info TCP_RESET acl
+#
+#	This can be used to return a ERR_ page for requests which
+#	do not pass the 'http_access' rules.  Squid remembers the last
+#	acl it evaluated in http_access, and if a 'deny_info' line exists
+#	for that ACL Squid returns a corresponding error page.
+#
+#	The acl is typically the last acl on the http_access deny line which
+#	denied access. The exceptions to this rule are:
+#	- When Squid needs to request authentication credentials. It's then
+#	  the first authentication related acl encountered
+#	- When none of the http_access lines matches. It's then the last
+#	  acl processed on the last http_access line.
+#	- When the decision to deny access was made by an adaptation service,
+#	  the acl name is the corresponding eCAP or ICAP service_name.
+#
+#	NP: If providing your own custom error pages with error_directory
+#	    you may also specify them by your custom file name:
+#	    Example: deny_info ERR_CUSTOM_ACCESS_DENIED bad_guys
+#
+#	By defaut Squid will send "403 Forbidden". A different 4xx or 5xx
+#	may be specified by prefixing the file name with the code and a colon.
+#	e.g. 404:ERR_CUSTOM_ACCESS_DENIED
+#
+#	Alternatively you can tell Squid to reset the TCP connection
+#	by specifying TCP_RESET.
+#
+#	Or you can specify an error URL or URL pattern. The browsers will
+#	get redirected to the specified URL after formatting tags have
+#	been replaced. Redirect will be done with 302 or 307 according to
+#	HTTP/1.1 specs. A different 3xx code may be specified by prefixing
+#	the URL. e.g. 303:http://example.com/
+#
+#	URL FORMAT TAGS:
+#		%a	- username (if available. Password NOT included)
+#		%B	- FTP path URL
+#		%e	- Error number
+#		%E	- Error description
+#		%h	- Squid hostname
+#		%H	- Request domain name
+#		%i	- Client IP Address
+#		%M	- Request Method
+#		%o	- Message result from external ACL helper
+#		%p	- Request Port number
+#		%P	- Request Protocol name
+#		%R	- Request URL path
+#		%T	- Timestamp in RFC 1123 format
+#		%U	- Full canonical URL from client
+#			  (HTTPS URLs terminate with *)
+#		%u	- Full canonical URL from client
+#		%w	- Admin email from squid.conf
+#		%x	- Error name
+#		%%	- Literal percent (%) code
+#
+#Default:
+# none
+
+# OPTIONS INFLUENCING REQUEST FORWARDING 
+# -----------------------------------------------------------------------------
+
+#  TAG: nonhierarchical_direct
+#	By default, Squid will send any non-hierarchical requests
+#	(matching hierarchy_stoplist or not cacheable request type) direct
+#	to origin servers.
+#
+#	If you set this to off, Squid will prefer to send these
+#	requests to parents.
+#
+#	Note that in most configurations, by turning this off you will only
+#	add latency to these request without any improvement in global hit
+#	ratio.
+#
+#	If you are inside an firewall see never_direct instead of
+#	this directive.
+#Default:
+# nonhierarchical_direct on
+
+#  TAG: prefer_direct
+#	Normally Squid tries to use parents for most requests. If you for some
+#	reason like it to first try going direct and only use a parent if
+#	going direct fails set this to on.
+#
+#	By combining nonhierarchical_direct off and prefer_direct on you
+#	can set up Squid to use a parent as a backup path if going direct
+#	fails.
+#
+#	Note: If you want Squid to use parents for all requests see
+#	the never_direct directive. prefer_direct only modifies how Squid
+#	acts on cacheable requests.
+#Default:
+# prefer_direct off
 
 #  TAG: always_direct
 #	Usage: always_direct allow|deny [!]aclname ...
 #
 #	Here you can use ACL elements to specify requests which should
-#	ALWAYS be forwarded directly to origin servers.  For example,
-#	to always directly forward requests for local servers use
+#	ALWAYS be forwarded by Squid to the origin servers without using
+#	any peers.  For example, to always directly forward requests for
+#	local servers ignoring any parents or siblings you may have use
 #	something like:
 #
 #		acl local-servers dstdomain my.domain.net
@@ -2024,13 +5445,21 @@ icp_access allow all
 #	some other rule.  Example:
 #
 #		acl local-external dstdomain external.foo.net
-#		acl local-servers dstdomain  foo.net
+#		acl local-servers dstdomain  .foo.net
 #		always_direct deny local-external
 #		always_direct allow local-servers
 #
-#	This option replaces some v1.1 options such as local_domain
-#	and local_ip.
+#	NOTE: If your goal is to make the client forward the request
+#	directly to the origin server bypassing Squid then this needs
+#	to be done in the client configuration. Squid configuration
+#	can only tell Squid how Squid should fetch the object.
 #
+#	NOTE: This directive is not related to caching. The replies
+#	is cached as usual even if you use always_direct. To not cache
+#	the replies see the 'cache' directive.
+#
+#	This clause supports both fast and slow acl types.
+#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
 #Default:
 # none
 
@@ -2045,661 +5474,1112 @@ icp_access allow all
 #	servers.  For example, to force the use of a proxy for all
 #	requests, except those in your local domain use something like:
 #
-#		acl local-servers dstdomain foo.net
-#		acl all src 0.0.0.0/0.0.0.0
+#		acl local-servers dstdomain .foo.net
 #		never_direct deny local-servers
 #		never_direct allow all
-#	
-#	or if squid is inside a firewall and there is local intranet
-#	servers inside the firewall then use something like:
 #
-#		acl local-intranet dstdomain foo.net
+#	or if Squid is inside a firewall and there are local intranet
+#	servers inside the firewall use something like:
+#
+#		acl local-intranet dstdomain .foo.net
 #		acl local-external dstdomain external.foo.net
 #		always_direct deny local-external
 #		always_direct allow local-intranet
 #		never_direct allow all
-#	
-#	This option replaces some v1.1 options such as inside_firewall
-#	and firewall_ip.
 #
+#	This clause supports both fast and slow acl types.
+#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
 #Default:
 # none
 
-#  TAG: anonymize_headers
-#	Usage: anonymize_headers allow|deny header_name ...
+# ADVANCED NETWORKING OPTIONS
+# -----------------------------------------------------------------------------
+
+#  TAG: incoming_udp_average
+#	Heavy voodoo here.  I can't even believe you are reading this.
+#	Are you crazy?  Don't even think about adjusting these unless
+#	you understand the algorithms in comm_select.c first!
+#Default:
+# incoming_udp_average 6
+
+#  TAG: incoming_tcp_average
+#	Heavy voodoo here.  I can't even believe you are reading this.
+#	Are you crazy?  Don't even think about adjusting these unless
+#	you understand the algorithms in comm_select.c first!
+#Default:
+# incoming_tcp_average 4
+
+#  TAG: incoming_dns_average
+#	Heavy voodoo here.  I can't even believe you are reading this.
+#	Are you crazy?  Don't even think about adjusting these unless
+#	you understand the algorithms in comm_select.c first!
+#Default:
+# incoming_dns_average 4
+
+#  TAG: min_udp_poll_cnt
+#	Heavy voodoo here.  I can't even believe you are reading this.
+#	Are you crazy?  Don't even think about adjusting these unless
+#	you understand the algorithms in comm_select.c first!
+#Default:
+# min_udp_poll_cnt 8
+
+#  TAG: min_dns_poll_cnt
+#	Heavy voodoo here.  I can't even believe you are reading this.
+#	Are you crazy?  Don't even think about adjusting these unless
+#	you understand the algorithms in comm_select.c first!
+#Default:
+# min_dns_poll_cnt 8
+
+#  TAG: min_tcp_poll_cnt
+#	Heavy voodoo here.  I can't even believe you are reading this.
+#	Are you crazy?  Don't even think about adjusting these unless
+#	you understand the algorithms in comm_select.c first!
+#Default:
+# min_tcp_poll_cnt 8
+
+#  TAG: accept_filter
+#	FreeBSD:
 #
-#	This option replaces the old 'http_anonymizer' option with
-#	something that is much more configurable.  You may now
-#	specify exactly which headers are to be allowed, or which
-#	are to be removed from outgoing requests.
+#	The name of an accept(2) filter to install on Squid's
+#	listen socket(s).  This feature is perhaps specific to
+#	FreeBSD and requires support in the kernel.
 #
-#	There are two methods of using this option.  You may either
-#	allow specific headers (thus denying all others), or you
-#	may deny specific headers (thus allowing all others).
+#	The 'httpready' filter delays delivering new connections
+#	to Squid until a full HTTP request has been received.
+#	See the accf_http(9) man page for details.
 #
-#	For example, to achieve the same behavior as the old
-#	'http_anonymizer standard' option, you should use:
+#	The 'dataready' filter delays delivering new connections
+#	to Squid until there is some data to process.
+#	See the accf_dataready(9) man page for details.
 #
-#		anonymize_headers deny From Referer Server
-#		anonymize_headers deny User-Agent WWW-Authenticate Link
-#		
-#	Or, to reproduce the old 'http_anonymizer paranoid' feature
-#	you should use:
+#	Linux:
+#	
+#	The 'data' filter delays delivering of new connections
+#	to Squid until there is some data to process by TCP_ACCEPT_DEFER.
+#	You may optionally specify a number of seconds to wait by
+#	'data=N' where N is the number of seconds. Defaults to 30
+#	if not specified.  See the tcp(7) man page for details.
+#EXAMPLE:
+## FreeBSD
+#accept_filter httpready
+## Linux
+#accept_filter data
+#Default:
+# none
+
+#  TAG: client_ip_max_connections
+#	Set an absolute limit on the number of connections a single
+#	client IP can use. Any more than this and Squid will begin to drop
+#	new connections from the client until it closes some links.
 #
-#		anonymize_headers allow Allow Authorization Cache-Control
-#		anonymize_headers allow Content-Encoding Content-Length
-#		anonymize_headers allow Content-Type Date Expires Host
-#		anonymize_headers allow If-Modified-Since Last-Modified
-#		anonymize_headers allow Location Pragma Accept
-#		anonymize_headers allow Accept-Encoding Accept-Language
-#		anonymize_headers allow Content-Language Mime-Version
-#		anonymize_headers allow Retry-After Title Connection
-#		anonymize_headers allow Proxy-Connection
+#	Note that this is a global limit. It affects all HTTP, HTCP, Gopher and FTP
+#	connections from the client. For finer control use the ACL access controls.
 #
-#	NOTE: You can not mix "allow" and "deny".  All 'anonymize_headers'
-#	lines must have the same second argument.
+#	Requires client_db to be enabled (the default).
 #
-#	By default, all headers are allowed (no anonymizing is
-#	performed).
+#	WARNING: This may noticably slow down traffic received via external proxies
+#	or NAT devices and cause them to rebound error messages back to their clients.
+#Default:
+# client_ip_max_connections -1
+
+#  TAG: tcp_recv_bufsize	(bytes)
+#	Size of receive buffer to set for TCP sockets.  Probably just
+#	as easy to change your kernel's default.  Set to zero to use
+#	the default buffer size.
+#Default:
+# tcp_recv_bufsize 0 bytes
+
+# ICAP OPTIONS
+# -----------------------------------------------------------------------------
+
+#  TAG: icap_enable	on|off
+#	If you want to enable the ICAP module support, set this to on.
+#Default:
+# icap_enable off
+
+#  TAG: icap_connect_timeout
+#	This parameter specifies how long to wait for the TCP connect to
+#	the requested ICAP server to complete before giving up and either
+#	terminating the HTTP transaction or bypassing the failure.
 #
+#	The default for optional services is peer_connect_timeout.
+#	The default for essential services is connect_timeout.
+#	If this option is explicitly set, its value applies to all services.
 #Default:
 # none
 
-#  TAG: fake_user_agent
-#	If you filter the User-Agent header with 'anonymize_headers' it
-#	may cause some Web servers to refuse your request.  Use this to
-#	fake one up.  For example:
-#
-#	fake_user_agent Nutscrape/1.0 (CP/M; 8-bit)
-#	(credit to Paul Southworth pauls@etext.org for this one!)
+#  TAG: icap_io_timeout	time-units
+#	This parameter specifies how long to wait for an I/O activity on
+#	an established, active ICAP connection before giving up and
+#	either terminating the HTTP transaction or bypassing the
+#	failure.
 #
+#	The default is read_timeout.
 #Default:
 # none
 
-#  TAG: icon_directory
-#	Where the icons are stored. These are normally kept in
-#	/usr/lib/squid/icons
+#  TAG: icap_service_failure_limit	limit [in memory-depth time-units]
+#	The limit specifies the number of failures that Squid tolerates
+#	when establishing a new TCP connection with an ICAP service. If
+#	the number of failures exceeds the limit, the ICAP service is
+#	not used for new ICAP requests until it is time to refresh its
+#	OPTIONS.
+#
+#	A negative value disables the limit. Without the limit, an ICAP
+#	service will not be considered down due to connectivity failures
+#	between ICAP OPTIONS requests.
+#
+#	Squid forgets ICAP service failures older than the specified
+#	value of memory-depth. The memory fading algorithm 
+#	is approximate because Squid does not remember individual 
+#	errors but groups them instead, splitting the option
+#	value into ten time slots of equal length.
+#
+#	When memory-depth is 0 and by default this option has no 
+#	effect on service failure expiration.
+#
+#	Squid always forgets failures when updating service settings
+#	using an ICAP OPTIONS transaction, regardless of this option
+#	setting.
 #
+#	For example,
+#		# suspend service usage after 10 failures in 5 seconds:
+#		icap_service_failure_limit 10 in 5 seconds
 #Default:
-# icon_directory /usr/lib/squid/icons
+# icap_service_failure_limit 10
 
-#  TAG: error_directory
-#	Directory where the error files are read from.
-#	/usr/lib/squid/errors contains sets of error files
-#	in different languages. The default error directory
-#	is /etc/squid/errors, which is a link to one of these
-#	error sets.
-#
-#	If you wish to create your own versions of the error files,
-#	either to customize them to suit your language or company,
-#	copy the template English files to another
-#	directory and point this tag at them.
-#	
-#error_directory /etc/squid/errors
+#  TAG: icap_service_revival_delay
+#	The delay specifies the number of seconds to wait after an ICAP
+#	OPTIONS request failure before requesting the options again. The
+#	failed ICAP service is considered "down" until fresh OPTIONS are
+#	fetched.
 #
+#	The actual delay cannot be smaller than the hardcoded minimum
+#	delay of 30 seconds.
 #Default:
-# error_directory /etc/squid/errors
+# icap_service_revival_delay 180
 
-#  TAG: minimum_retry_timeout	(seconds)
-#	This specifies the minimum connect timeout, for when the
-#	connect timeout is reduced to compensate for the availability
-#	of multiple IP addresses.
+#  TAG: icap_preview_enable	on|off
+#	The ICAP Preview feature allows the ICAP server to handle the
+#	HTTP message by looking only at the beginning of the message body
+#	or even without receiving the body at all. In some environments, 
+#	previews greatly speedup ICAP processing.
 #
-#	When a connection to a host is initiated, and that host has
-#	several IP addresses, the default connection timeout is reduced
-#	by dividing it by the number of addresses.  So, a site with 15
-#	addresses would then have a timeout of 8 seconds for each
-#	address attempted.  To avoid having the timeout reduced to the
-#	point where even a working host would not have a chance to
-#	respond, this setting is provided.  The default, and the
-#	minimum value, is five seconds, and the maximum value is sixty
-#	seconds, or half of connect_timeout, whichever is greater and
-#	less than connect_timeout.
+#	During an ICAP OPTIONS transaction, the server may tell	Squid what
+#	HTTP messages should be previewed and how big the preview should be.
+#	Squid will not use Preview if the server did not request one.
 #
+#	To disable ICAP Preview for all ICAP services, regardless of
+#	individual ICAP server OPTIONS responses, set this option to "off".
+#Example:
+#icap_preview_enable off
 #Default:
-# minimum_retry_timeout 5 seconds
+# icap_preview_enable on
 
-#  TAG: maximum_single_addr_tries
-#	This sets the maximum number of connection attempts for a
-#	host that only has one address (for multiple-address hosts,
-#	each address is tried once).
+#  TAG: icap_preview_size
+#	The default size of preview data to be sent to the ICAP server.
+#	-1 means no preview. This value might be overwritten on a per server
+#	basis by OPTIONS requests.
+#Default:
+# icap_preview_size -1
+
+#  TAG: icap_206_enable	on|off
+#	206 (Partial Content) responses is an ICAP extension that allows the
+#	ICAP agents to optionally combine adapted and original HTTP message
+#	content. The decision to combine is postponed until the end of the
+#	ICAP response. Squid supports Partial Content extension by default.
 #
-#	The default value is three tries, the (not recommended)
-#	maximum is 255 tries.  A warning message will be generated
-#	if it is set to a value greater than ten.
+#	Activation of the Partial Content extension is negotiated with each
+#	ICAP service during OPTIONS exchange. Most ICAP servers should handle
+#	negotation correctly even if they do not support the extension, but
+#	some might fail. To disable Partial Content support for all ICAP
+#	services and to avoid any negotiation, set this option to "off".
 #
+#	Example:
+#	    icap_206_enable off
 #Default:
-# maximum_single_addr_tries 3
+# icap_206_enable on
 
-#  TAG: snmp_port
-#	Squid can now serve statistics and status information via SNMP.
-#	By default it listens to port 3401 on the machine. If you don't
-#	wish to use SNMP, set this to "0".
+#  TAG: icap_default_options_ttl
+#	The default TTL value for ICAP OPTIONS responses that don't have
+#	an Options-TTL header.
+#Default:
+# icap_default_options_ttl 60
+
+#  TAG: icap_persistent_connections	on|off
+#	Whether or not Squid should use persistent connections to
+#	an ICAP server.
+#Default:
+# icap_persistent_connections on
+
+#  TAG: adaptation_send_client_ip	on|off
+#	If enabled, Squid shares HTTP client IP information with adaptation
+#	services. For ICAP, Squid adds the X-Client-IP header to ICAP requests.
+#	For eCAP, Squid sets the libecap::metaClientIp transaction option.
 #
-#	NOTE: SNMP support requires use the --enable-snmp configure
-#	command line option.
+#	See also: adaptation_uses_indirect_client
+#Default:
+# adaptation_send_client_ip off
+
+#  TAG: adaptation_send_username	on|off
+#	This sends authenticated HTTP client username (if available) to
+#	the adaptation service.
 #
+#	For ICAP, the username value is encoded based on the
+#	icap_client_username_encode option and is sent using the header
+#	specified by the icap_client_username_header option.
 #Default:
-# snmp_port 3401
+# adaptation_send_username off
 
-#  TAG: snmp_access
-#	Allowing or denying access to the SNMP port.
+#  TAG: icap_client_username_header
+#	ICAP request header name to use for send_username.
+#Default:
+# icap_client_username_header X-Client-Username
+
+#  TAG: icap_client_username_encode	on|off
+#	Whether to base64 encode the authenticated client username.
+#Default:
+# icap_client_username_encode off
+
+#  TAG: icap_service
+#	Defines a single ICAP service using the following format:
 #
-#	All access to the agent is denied by default.
-#	usage:
+#	icap_service id vectoring_point uri [option ...]
 #
-#	snmp_access allow|deny [!]aclname ...
+#	id: ID
+#		an opaque identifier or name which is used to direct traffic to
+#		this specific service. Must be unique among all adaptation
+#		services in squid.conf.
 #
-#Example:
-# snmp_access allow snmppublic localhost
-# snmp_access deny all
+#	vectoring_point: reqmod_precache|reqmod_postcache|respmod_precache|respmod_postcache
+#		This specifies at which point of transaction processing the
+#		ICAP service should be activated. *_postcache vectoring points
+#		are not yet supported.
 #
-#Default:
-# snmp_access deny all
-
-#  TAG: snmp_incoming_address
-#  TAG: snmp_outgoing_address
-#	Just like 'udp_incoming_address' above, but for the SNMP port.
+#	uri: icap://servername:port/servicepath
+#		ICAP server and service location.
 #
-#	snmp_incoming_address	is used for the SNMP socket receiving
-#				messages from SNMP agents.
-#	snmp_outgoing_address	is used for SNMP packets returned to SNMP
-#				agents.
+#	ICAP does not allow a single service to handle both REQMOD and RESPMOD
+#	transactions. Squid does not enforce that requirement. You can specify
+#	services with the same service_url and different vectoring_points. You
+#	can even specify multiple identical services as long as their
+#	service_names differ.
 #
-#	The default snmp_incoming_address (0.0.0.0) is to listen on all
-#	available network interfaces.
 #
-#	If snmp_outgoing_address is set to 255.255.255.255 (the default)
-#	then it will use the same socket as snmp_incoming_address. Only
-#	change this if you want to have SNMP replies sent using another
-#	address than where this Squid listens for SNMP queries.
+#	Service options are separated by white space. ICAP services support
+#	the following name=value options:
 #
-#	NOTE, snmp_incoming_address and snmp_outgoing_address can not have
-#	the same value since they both use port 3401.
+#	bypass=on|off|1|0
+#		If set to 'on' or '1', the ICAP service is treated as
+#		optional. If the service cannot be reached or malfunctions,
+#		Squid will try to ignore any errors and process the message as
+#		if the service was not enabled. No all ICAP errors can be
+#		bypassed.  If set to 0, the ICAP service is treated as
+#		essential and all ICAP errors will result in an error page
+#		returned to the HTTP client.
+#
+#		Bypass is off by default: services are treated as essential.
+#
+#	routing=on|off|1|0
+#		If set to 'on' or '1', the ICAP service is allowed to
+#		dynamically change the current message adaptation plan by
+#		returning a chain of services to be used next. The services
+#		are specified using the X-Next-Services ICAP response header
+#		value, formatted as a comma-separated list of service names.
+#		Each named service should be configured in squid.conf. Other
+#		services are ignored. An empty X-Next-Services value results
+#		in an empty plan which ends the current adaptation.
+#
+#		Dynamic adaptation plan may cross or cover multiple supported
+#		vectoring points in their natural processing order.
 #
+#		Routing is not allowed by default: the ICAP X-Next-Services
+#		response header is ignored.
+#
+#	ipv6=on|off
+#		Only has effect on split-stack systems. The default on those systems
+#		is to use IPv4-only connections. When set to 'on' this option will
+#		make Squid use IPv6-only connections to contact this ICAP service.
+#
+#	on-overload=block|bypass|wait|force
+#		If the service Max-Connections limit has been reached, do
+#		one of the following for each new ICAP transaction:
+#		  * block:  send an HTTP error response to the client
+#		  * bypass: ignore the "over-connected" ICAP service
+#		  * wait:   wait (in a FIFO queue) for an ICAP connection slot
+#		  * force:  proceed, ignoring the Max-Connections limit 
+#
+#		In SMP mode with N workers, each worker assumes the service
+#		connection limit is Max-Connections/N, even though not all
+#		workers may use a given service.
+#
+#		The default value is "bypass" if service is bypassable,
+#		otherwise it is set to "wait".
+#		
+#
+#	max-conn=number
+#		Use the given number as the Max-Connections limit, regardless
+#		of the Max-Connections value given by the service, if any.
+#
+#	Older icap_service format without optional named parameters is
+#	deprecated but supported for backward compatibility.
+#
+#Example:
+#icap_service svcBlocker reqmod_precache icap://icap1.mydomain.net:1344/reqmod bypass=0
+#icap_service svcLogger reqmod_precache icap://icap2.mydomain.net:1344/respmod routing=on
 #Default:
-# snmp_incoming_address 0.0.0.0
-# snmp_outgoing_address 255.255.255.255
+# none
 
-#  TAG: as_whois_server
-#	WHOIS server to query for AS numbers.  NOTE: AS numbers are
-#	queried only when Squid starts up, not for every request.
+#  TAG: icap_class
+#	This deprecated option was documented to define an ICAP service
+#	chain, even though it actually defined a set of similar, redundant
+#	services, and the chains were not supported. 
 #
+#	To define a set of redundant services, please use the
+#	adaptation_service_set directive. For service chains, use
+#	adaptation_service_chain.
 #Default:
-# as_whois_server whois.ra.net
-# as_whois_server whois.ra.net
+# none
 
-#  TAG: wccp_router
-#	Use this option to define your WCCP ``home'' router for
-#	Squid.   Setting the 'wccp_router' to 0.0.0.0 (the default)
-#	disables WCCP.
-#
+#  TAG: icap_access
+#	This option is deprecated. Please use adaptation_access, which
+#	has the same ICAP functionality, but comes with better
+#	documentation, and eCAP support.
 #Default:
-# wccp_router 0.0.0.0
+# none
 
-#  TAG: wccp_version
-#	According to some users, Cisco IOS 11.2 only supports WCCP
-#	version 3.  If you're using that version of IOS, change
-#	this value to 3.
-#
+# eCAP OPTIONS
+# -----------------------------------------------------------------------------
+
+#  TAG: ecap_enable	on|off
+#	Controls whether eCAP support is enabled.
 #Default:
-# wccp_version 4
+# ecap_enable off
 
-#  TAG: wccp_incoming_address
-#  TAG: wccp_outgoing_address
-#        wccp_incoming_address   Use this option if you require WCCP
-#				messages to be received on only one
-#				interface.  Do NOT use this option if
-#				you're unsure how many interfaces you
-#				have, or if you know you have only one
-#				interface.
+#  TAG: ecap_service
+#	Defines a single eCAP service
 #
-#	wccp_outgoing_address	Use this option if you require WCCP
-#				messages to be sent out on only one
-#				interface.  Do NOT use this option if
-#				you're unsure how many interfaces you
-#				have, or if you know you have only one
-#				interface.
+#	ecap_service id vectoring_point uri [option ...]
 #
-#        The default behavior is to not bind to any specific address.
+#        id: ID
+#		an opaque identifier or name which is used to direct traffic to
+#		this specific service. Must be unique among all adaptation
+#		services in squid.conf.
 #
-#        NOTE, wccp_incoming_address and wccp_outgoing_address can not have
-#        the same value since they both use port 2048.
+#	vectoring_point: reqmod_precache|reqmod_postcache|respmod_precache|respmod_postcache
+#		This specifies at which point of transaction processing the
+#		eCAP service should be activated. *_postcache vectoring points
+#		are not yet supported.
 #
-#Default:
-# wccp_incoming_address 0.0.0.0
-# wccp_outgoing_address 255.255.255.255
-
-
-# DELAY POOL PARAMETERS (all require DELAY_POOLS compilation option)
-# -----------------------------------------------------------------------------
-
-#  TAG: delay_pools
-#	This represents the number of delay pools to be used.  For example,
-#	if you have one class 2 delay pool and one class 3 delays pool, you
-#	have a total of 2 delay pools.
+#	uri: ecap://vendor/service_name?custom&cgi=style&parameters=optional
+#		Squid uses the eCAP service URI to match this configuration
+#		line with one of the dynamically loaded services. Each loaded
+#		eCAP service must have a unique URI. Obtain the right URI from
+#		the service provider.
 #
-#	To enable this option, you must use --enable-delay-pools with the
-#	configure script.
 #
-#Default:
-# delay_pools 0
-
-#  TAG: delay_class
-#	This defines the class of each delay pool.  There must be exactly one
-#	delay_class line for each delay pool.  For example, to define two
-#	delay pools, one of class 2 and one of class 3, the settings above
-#	and here would be:
+#	Service options are separated by white space. eCAP services support
+#	the following name=value options:
 #
-#Example:
-# delay_pools 2      # 2 delay pools
-# delay_class 1 2    # pool 1 is a class 2 pool
-# delay_class 2 3    # pool 2 is a class 3 pool
+#	bypass=on|off|1|0
+#		If set to 'on' or '1', the eCAP service is treated as optional.
+#		If the service cannot be reached or malfunctions, Squid will try
+#		to ignore any errors and process the message as if the service
+#		was not enabled. No all eCAP errors can be bypassed.
+#		If set to 'off' or '0', the eCAP service is treated as essential
+#		and all eCAP errors will result in an error page returned to the
+#		HTTP client.
 #
-#	The delay pool classes are:
+#                Bypass is off by default: services are treated as essential.
 #
-#		class 1		Everything is limited by a single aggregate
-#				bucket.
+#	routing=on|off|1|0
+#		If set to 'on' or '1', the eCAP service is allowed to
+#		dynamically change the current message adaptation plan by
+#		returning a chain of services to be used next.
 #
-#		class 2 	Everything is limited by a single aggregate
-#				bucket as well as an "individual" bucket chosen
-#				from bits 25 through 32 of the IP address.
+#		Dynamic adaptation plan may cross or cover multiple supported
+#		vectoring points in their natural processing order.
 #
-#		class 3		Everything is limited by a single aggregate
-#				bucket as well as a "network" bucket chosen
-#				from bits 17 through 24 of the IP address and a
-#				"individual" bucket chosen from bits 17 through
-#				32 of the IP address.
+#		Routing is not allowed by default.
+#
+#	Older ecap_service format without optional named parameters is
+#	deprecated but supported for backward compatibility.
 #
-#	NOTE: If an IP address is a.b.c.d
-#		-> bits 25 through 32 are "d"
-#		-> bits 17 through 24 are "c"
-#		-> bits 17 through 32 are "c * 256 + d"
 #
+#Example:
+#ecap_service s1 reqmod_precache ecap://filters.R.us/leakDetector?on_error=block bypass=off
+#ecap_service s2 respmod_precache ecap://filters.R.us/virusFilter config=/etc/vf.cfg bypass=on
 #Default:
 # none
 
-#  TAG: delay_access
-#	This is used to determine which delay pool a request falls into.
-#	The first matched delay pool is always used, i.e., if a request falls
-#	into delay pool number one, no more delay are checked, otherwise the
-#	rest are checked in order of their delay pool number until they have
-#	all been checked.  For example, if you want some_big_clients in delay
-#	pool 1 and lotsa_little_clients in delay pool 2:
-#
+#  TAG: loadable_modules
+#	Instructs Squid to load the specified dynamic module(s) or activate
+#	preloaded module(s).
 #Example:
-# delay_access 1 allow some_big_clients
-# delay_access 1 deny all
-# delay_access 2 allow lotsa_little_clients
-# delay_access 2 deny all
-#
+#loadable_modules /usr/lib/MinimalAdapter.so
 #Default:
 # none
 
-#  TAG: delay_parameters
-#	This defines the parameters for a delay pool.  Each delay pool has
-#	a number of "buckets" associated with it, as explained in the
-#	description of delay_class.  For a class 1 delay pool, the syntax is:
+# MESSAGE ADAPTATION OPTIONS
+# -----------------------------------------------------------------------------
+
+#  TAG: adaptation_service_set
 #
-#delay_parameters pool aggregate
+#	Configures an ordered set of similar, redundant services. This is
+#	useful when hot standby or backup adaptation servers are available.
 #
-#	For a class 2 delay pool:
+#	    adaptation_service_set set_name service_name1 service_name2 ...
 #
-#delay_parameters pool aggregate individual
+# 	The named services are used in the set declaration order. The first
+#	applicable adaptation service from the set is used first. The next
+#	applicable service is tried if and only if the transaction with the
+#	previous service fails and the message waiting to be adapted is still
+#	intact.
 #
-#	For a class 3 delay pool:
+#	When adaptation starts, broken services are ignored as if they were
+#	not a part of the set. A broken service is a down optional service.
 #
-#delay_parameters pool aggregate network individual
+#	The services in a set must be attached to the same vectoring point
+#	(e.g., pre-cache) and use the same adaptation method (e.g., REQMOD).
 #
-#	The variables here are:
+#	If all services in a set are optional then adaptation failures are
+#	bypassable. If all services in the set are essential, then a
+#	transaction failure with one service may still be retried using
+#	another service from the set, but when all services fail, the master
+#	transaction fails as well.
 #
-#		pool		a pool number - ie, a number between 1 and the
-#				number specified in delay_pools as used in
-#				delay_class lines.
+#	A set may contain a mix of optional and essential services, but that
+#	is likely to lead to surprising results because broken services become
+#	ignored (see above), making previously bypassable failures fatal.
+#	Technically, it is the bypassability of the last failed service that
+#	matters.
 #
-#		aggregate	the "delay parameters" for the aggregate bucket
-#				(class 1, 2, 3).
+#	See also: adaptation_access adaptation_service_chain
 #
-#		individual	the "delay parameters" for the individual
-#				buckets (class 2, 3).
+#Example:
+#adaptation_service_set svcBlocker urlFilterPrimary urlFilterBackup
+#adaptation service_set svcLogger loggerLocal loggerRemote
+#Default:
+# none
+
+#  TAG: adaptation_service_chain
 #
-#		network		the "delay parameters" for the network buckets
-#				(class 3).
+#	Configures a list of complementary services that will be applied
+#	one-by-one, forming an adaptation chain or pipeline. This is useful
+#	when Squid must perform different adaptations on the same message.
 #
-#	A pair of delay parameters is written restore/maximum, where restore is
-#	the number of bytes (not bits - modem and network speeds are usually
-#	quoted in bits) per second placed into the bucket, and maximum is the
-#	maximum number of bytes which can be in the bucket at any time.
+#	    adaptation_service_chain chain_name service_name1 svc_name2 ...
 #
-#	For example, if delay pool number 1 is a class 2 delay pool as in the
-#	above example, and is being used to strictly limit each host to 64kbps
-#	(plus overheads), with no overall limit, the line is:
+# 	The named services are used in the chain declaration order. The first
+#	applicable adaptation service from the chain is used first. The next
+#	applicable service is applied to the successful adaptation results of
+#	the previous service in the chain.
 #
-#delay_parameters 1 -1/-1 8000/8000
+#	When adaptation starts, broken services are ignored as if they were
+#	not a part of the chain. A broken service is a down optional service.
 #
-#	Note that the figure -1 is used to represent "unlimited".
+#	Request satisfaction terminates the adaptation chain because Squid
+#	does not currently allow declaration of RESPMOD services at the
+#	"reqmod_precache" vectoring point (see icap_service or ecap_service).
 #
-#	And, if delay pool number 2 is a class 3 delay pool as in the above
-#	example, and you want to limit it to a total of 256kbps (strict limit)
-#	with each 8-bit network permitted 64kbps (strict limit) and each
-#	individual host permitted 4800bps with a bucket maximum size of 64kb
-#	to permit a decent web page to be downloaded at a decent speed
-#	(if the network is not being limited due to overuse) but slow down
-#	large downloads more significantly:
+#	The services in a chain must be attached to the same vectoring point
+#	(e.g., pre-cache) and use the same adaptation method (e.g., REQMOD).
 #
-#delay_parameters 2 32000/32000 8000/8000 600/64000
+#	A chain may contain a mix of optional and essential services. If an
+#	essential adaptation fails (or the failure cannot be bypassed for
+#	other reasons), the master transaction fails. Otherwise, the failure
+#	is bypassed as if the failed adaptation service was not in the chain.
 #
-#	There must be one delay_parameters line for each delay pool.
+#	See also: adaptation_access adaptation_service_set
 #
+#Example:
+#adaptation_service_chain svcRequest requestLogger urlFilter leakDetector
 #Default:
 # none
 
-#  TAG: delay_initial_bucket_level	(percent, 0-100)
-#	The initial bucket percentage is used to determine how much is put
-#	in each bucket when squid starts, is reconfigured, or first notices
-#	a host accessing it (in class 2 and class 3, individual hosts and
-#	networks only have buckets associated with them once they have been
-#	"seen" by squid).
+#  TAG: adaptation_access
+#	Sends an HTTP transaction to an ICAP or eCAP adaptation	service.
 #
-#Default:
-# delay_initial_bucket_level 50
-
-#  TAG: incoming_icp_average
-#  TAG: incoming_http_average
-#  TAG: incoming_dns_average
-#  TAG: min_icp_poll_cnt
-#  TAG: min_dns_poll_cnt
-#  TAG: min_http_poll_cnt
-#	Heavy voodoo here.  I can't even believe you are reading this.
-#	Are you crazy?  Don't even think about adjusting these unless
-#	you understand the algorithms in comm_select.c first!
+#	adaptation_access service_name allow|deny [!]aclname...
+#	adaptation_access set_name     allow|deny [!]aclname...
 #
-#Default:
-# incoming_icp_average 6
-# incoming_http_average 4
-# incoming_dns_average 4
-# min_icp_poll_cnt 8
-# min_dns_poll_cnt 8
-# min_http_poll_cnt 8
-
-#  TAG: max_open_disk_fds
-#	To avoid having disk as the I/O bottleneck Squid can optionally
-#	bypass the on-disk cache if more than this amount of disk file
-#	descriptors are open.
+#	At each supported vectoring point, the adaptation_access
+#	statements are processed in the order they appear in this
+#	configuration file. Statements pointing to the following services
+#	are ignored (i.e., skipped without checking their ACL):
 #
-#	A value of 0 indicates no limit.
+#	    - services serving different vectoring points
+#	    - "broken-but-bypassable" services
+#	    - "up" services configured to ignore such transactions
+#              (e.g., based on the ICAP Transfer-Ignore header).
 #
-#Default:
-# max_open_disk_fds 0
-
-#  TAG: offline_mode
-#	Enable this option and Squid will never try to validate cached
-#	objects.
+#        When a set_name is used, all services in the set are checked
+#	using the same rules, to find the first applicable one. See
+#	adaptation_service_set for details.
+#
+#	If an access list is checked and there is a match, the
+#	processing stops: For an "allow" rule, the corresponding
+#	adaptation service is used for the transaction. For a "deny"
+#	rule, no adaptation service is activated.
 #
+#	It is currently not possible to apply more than one adaptation
+#	service at the same vectoring point to the same HTTP transaction.
+#
+#        See also: icap_service and ecap_service
+#
+#Example:
+#adaptation_access service_1 allow all
 #Default:
-# offline_mode off
+# none
 
-#  TAG: uri_whitespace
-#	What to do with requests that have whitespace characters in the
-#	URI.  Options:
+#  TAG: adaptation_service_iteration_limit
+#	Limits the number of iterations allowed when applying adaptation
+#	services to a message. If your longest adaptation set or chain
+#	may have more than 16 services, increase the limit beyond its
+#	default value of 16. If detecting infinite iteration loops sooner
+#	is critical, make the iteration limit match the actual number
+#	of services in your longest adaptation set or chain.
 #
-#	strip:  The whitespace characters are stripped out of the URL.
-#		This is the behavior recommended by RFC2616.
-#	deny:   The request is denied.  The user receives an "Invalid
-#		Request" message.
-#	allow:  The request is allowed and the URI is not changed.  The
-#		whitespace characters remain in the URI.  Note the
-#		whitespace is passed to redirector processes if they
-#		are in use.
-#	encode:	The request is allowed and the whitespace characters are
-#		encoded according to RFC1738.  This could be considered
-#		a violation of the HTTP/1.1
-#		RFC because proxies are not allowed to rewrite URI's.
-#	chop:	The request is allowed and the URI is chopped at the
-#		first whitespace.  This might also be considered a
-#		violation.
+#	Infinite adaptation loops are most likely with routing services.
 #
+#	See also: icap_service routing=1
 #Default:
-# uri_whitespace strip
+# adaptation_service_iteration_limit 16
 
-#  TAG: broken_posts
-#	A list of ACL elements which, if matched, causes Squid to send
-#	a extra CRLF pair after the body of a PUT/POST request.
+#  TAG: adaptation_masterx_shared_names
+#	For each master transaction (i.e., the HTTP request and response
+#	sequence, including all related ICAP and eCAP exchanges), Squid
+#	maintains a table of metadata. The table entries are (name, value)
+#	pairs shared among eCAP and ICAP exchanges. The table is destroyed
+#	with the master transaction.
 #
-#	Some HTTP servers has broken implementations of PUT/POST,
-#	and rely on a extra CRLF pair sent by some WWW clients.
+#	This option specifies the table entry names that Squid must accept
+#	from and forward to the adaptation transactions.
 #
-#	Quote from RFC 2068 section 4.1 on this matter:
+#	An ICAP REQMOD or RESPMOD transaction may set an entry in the 
+#	shared table by returning an ICAP header field with a name 
+#	specified in adaptation_masterx_shared_names.
 #
-#	  Note: certain buggy HTTP/1.0 client implementations generate an
-#	  extra CRLF's after a POST request. To restate what is explicitly
-#	  forbidden by the BNF, an HTTP/1.1 client must not preface or follow
-#	  a request with an extra CRLF.
+#	An eCAP REQMOD or RESPMOD transaction may set an entry in the
+#	shared table by implementing the libecap::visitEachOption() API
+#	to provide an option with a name specified in
+#	adaptation_masterx_shared_names.
 #
-#Example:
-# acl buggy_server url_regex ^http://....
-# broken_posts allow buggy_server
+#	Squid will store and forward the set entry to subsequent adaptation
+#	transactions within the same master transaction scope.
+#
+#	Only one shared entry name is supported at this time.
 #
+#Example:
+## share authentication information among ICAP services
+#adaptation_masterx_shared_names X-Subscriber-ID
 #Default:
 # none
 
-#  TAG: mcast_miss_addr
-# Note: This option is only available if Squid is rebuilt with the
-#       -DMULTICAST_MISS_STREAM option
+#  TAG: adaptation_meta
+#	This option allows Squid administrator to add custom ICAP request
+#	headers or eCAP options to Squid ICAP requests or eCAP transactions.
+#	Use it to pass custom authentication tokens and other
+#	transaction-state related meta information to an ICAP/eCAP service.
+#	
+#	The addition of a meta header is ACL-driven:
+#		adaptation_meta name value [!]aclname ...
+#	
+#	Processing for a given header name stops after the first ACL list match.
+#	Thus, it is impossible to add two headers with the same name. If no ACL
+#	lists match for a given header name, no such header is added. For 
+#	example:
+#	
+#		# do not debug transactions except for those that need debugging
+#		adaptation_meta X-Debug 1 needs_debugging
+#	
+#		# log all transactions except for those that must remain secret
+#		adaptation_meta X-Log 1 !keep_secret
+#	
+#		# mark transactions from users in the "G 1" group
+#		adaptation_meta X-Authenticated-Groups "G 1" authed_as_G1
+#	
+#	The "value" parameter may be a regular squid.conf token or a "double
+#	quoted string". Within the quoted string, use backslash (\) to escape
+#	any character, which is currently only useful for escaping backslashes
+#	and double quotes. For example,
+#	    "this string has one backslash (\\) and two \"quotes\""
+#Default:
+# none
+
+#  TAG: icap_retry
+#	This ACL determines which retriable ICAP transactions are
+#	retried. Transactions that received a complete ICAP response
+#	and did not have to consume or produce HTTP bodies to receive
+#	that response are usually retriable.
 #
-#	If you enable this option, every "cache miss" URL will
-#	be sent out on the specified multicast address.
+#	icap_retry allow|deny [!]aclname ...
 #
-#	Do not enable this option unless you are are absolutely
-#	certain you understand what you are doing.
+#	Squid automatically retries some ICAP I/O timeouts and errors
+#	due to persistent connection race conditions.
 #
+#	See also: icap_retry_limit
 #Default:
-# mcast_miss_addr 255.255.255.255
+# icap_retry deny all
 
-#  TAG: mcast_miss_ttl
-# Note: This option is only available if Squid is rebuilt with the
-#       -DMULTICAST_MISS_TTL option
+#  TAG: icap_retry_limit
+#	Limits the number of retries allowed. When set to zero (default),
+#	no retries are allowed.
 #
-#	This is the time-to-live value for packets multicasted
-#	when multicasting off cache miss URLs is enabled.  By
-#	default this is set to 'site scope', i.e. 16.
+#	Communication errors due to persistent connection race
+#	conditions are unavoidable, automatically retried, and do not
+#	count against this limit.
 #
+#	See also: icap_retry
 #Default:
-# mcast_miss_ttl 16
+# icap_retry_limit 0
 
-#  TAG: mcast_miss_port
+# DNS OPTIONS
+# -----------------------------------------------------------------------------
+
+#  TAG: check_hostnames
+#	For security and stability reasons Squid can check
+#	hostnames for Internet standard RFC compliance. If you want
+#	Squid to perform these checks turn this directive on.
+#Default:
+# check_hostnames off
+
+#  TAG: allow_underscore
+#	Underscore characters is not strictly allowed in Internet hostnames
+#	but nevertheless used by many sites. Set this to off if you want
+#	Squid to be strict about the standard.
+#	This check is performed only when check_hostnames is set to on.
+#Default:
+# allow_underscore on
+
+#  TAG: cache_dns_program
 # Note: This option is only available if Squid is rebuilt with the
-#       -DMULTICAST_MISS_STREAM option
-#
-#	This is the port number to be used in conjunction with
-#	'mcast_miss_addr'.
+#       --disable-internal-dns
 #
+#	Specify the location of the executable for dnslookup process.
 #Default:
-# mcast_miss_port 3135
+# cache_dns_program /usr/lib64/squid/dnsserver
 
-#  TAG: mcast_miss_encode_key
+#  TAG: dns_children
 # Note: This option is only available if Squid is rebuilt with the
-#       -DMULTICAST_MISS_STREAM option
-#
-#	The URLs that are sent in the multicast miss stream are
-#	encrypted.  This is the encryption key.
+#       --disable-internal-dns
 #
+#	The maximum number of processes spawn to service DNS name lookups.
+#	If you limit it too few Squid will have to wait for them to process
+#	a backlog of requests, slowing it down. If you allow too many they
+#	will use RAM and other system resources noticably.
+#	The maximum this may be safely set to is 32.
+#	
+#	The startup= and idle= options allow some measure of skew in your
+#	tuning.
+#	
+#		startup=
+#	
+#	Sets a minimum of how many processes are to be spawned when Squid
+#	starts or reconfigures. When set to zero the first request will
+#	cause spawning of the first child process to handle it.
+#	
+#	Starting too few will cause an initial slowdown in traffic as Squid
+#	attempts to simultaneously spawn enough processes to cope.
+#	
+#		idle=
+#	
+#	Sets a minimum of how many processes Squid is to try and keep available
+#	at all times. When traffic begins to rise above what the existing
+#	processes can handle this many more will be spawned up to the maximum
+#	configured. A minimum setting of 1 is required.
 #Default:
-# mcast_miss_encode_key XXXXXXXXXXXXXXXX
+# dns_children 32 startup=1 idle=1
 
-#  TAG: nonhierarchical_direct
-#	By default, Squid will send any non-hierarchical requests
-#	(matching hierarchy_stoplist or not cachable request type) direct
-#	to origin servers.
-#
-#	If you set this to off, then Squid will prefer to send these
-#	requests to parents.
-#
-#	Note that in most configurations, by turning this off you will only
-#	add latency to these request without any improvement in global hit
-#	ratio.
-#
-#	If you are inside an firewall then see never_direct instead of
-#	this directive.
-#
+#  TAG: dns_retransmit_interval
+#	Initial retransmit interval for DNS queries. The interval is
+#	doubled each time all configured DNS servers have been tried.
 #Default:
-# nonhierarchical_direct on
+# dns_retransmit_interval 5 seconds
 
-#  TAG: prefer_direct
-#	Normally Squid tries to use parents for most requests. If you by some
-#	reason like it to first try going direct and only use a parent if
-#	going direct fails then set this to off.
-#
-#	By combining nonhierarchical_direct off and prefer_direct on you
-#	can set up Squid to use a parent as a backup path if going direct
-#	fails.
-#
+#  TAG: dns_timeout
+#	DNS Query timeout. If no response is received to a DNS query
+#	within this time all DNS servers for the queried domain
+#	are assumed to be unavailable.
 #Default:
-# prefer_direct off
+# dns_timeout 30 seconds
 
-#  TAG: strip_query_terms
-#	By default, Squid strips query terms from requested URLs before
-#	logging.  This protects your user's privacy.
-#
+#  TAG: dns_packet_max
+#	Maximum number of bytes packet size to advertise via EDNS.
+#	Set to "none" to disable EDNS large packet support.
+#	
+#	For legacy reasons DNS UDP replies will default to 512 bytes which
+#	is too small for many responses. EDNS provides a means for Squid to
+#	negotiate receiving larger responses back immediately without having
+#	to failover with repeat requests. Responses larger than this limit
+#	will retain the old behaviour of failover to TCP DNS.
+#	
+#	Squid has no real fixed limit internally, but allowing packet sizes
+#	over 1500 bytes requires network jumbogram support and is usually not
+#	necessary.
+#	
+#	WARNING: The RFC also indicates that some older resolvers will reply
+#	with failure of the whole request if the extension is added. Some
+#	resolvers have already been identified which will reply with mangled
+#	EDNS response on occasion. Usually in response to many-KB jumbogram
+#	sizes being advertised by Squid.
+#	Squid will currently treat these both as an unable-to-resolve domain
+#	even if it would be resolvable without EDNS.
 #Default:
-# strip_query_terms on
+# none
 
-#  TAG: coredump_dir
-#	By default Squid leaves core files in the first cache_dir
-#	directory.  If you set 'coredump_dir' to a directory
-#	that exists, Squid will chdir() to that directory at startup
-#	and coredump files will be left there.
+#  TAG: dns_defnames	on|off
+#	Normally the RES_DEFNAMES resolver option is disabled
+#	(see res_init(3)).  This prevents caches in a hierarchy
+#	from interpreting single-component hostnames locally.  To allow
+#	Squid to handle single-component names, enable this option.
+#Default:
+# dns_defnames off
+
+#  TAG: dns_nameservers
+#	Use this if you want to specify a list of DNS name servers
+#	(IP addresses) to use instead of those given in your
+#	/etc/resolv.conf file.
+#	On Windows platforms, if no value is specified here or in
+#	the /etc/resolv.conf file, the list of DNS name servers are
+#	taken from the Windows registry, both static and dynamic DHCP
+#	configurations are supported.
 #
+#	Example: dns_nameservers 10.0.0.1 192.172.0.4
 #Default:
 # none
 
-#  TAG: redirector_bypass
-#	When this is 'on', a request will not go through the
-#	redirector if all redirectors are busy.  If this is 'off'
-#	and the redirector queue grows too large, Squid will exit
-#	with a FATAL error and ask you to increase the number of
-#	redirectors.  You should only enable this if the redirectors
-#	are not critical to your caching system.  If you use
-#	redirectors for access control, and you enable this option,
-#	then users may have access to pages that they should not
-#	be allowed to request.
+#  TAG: hosts_file
+#	Location of the host-local IP name-address associations
+#	database. Most Operating Systems have such a file on different
+#	default locations:
+#	- Un*X & Linux:    /etc/hosts
+#	- Windows NT/2000: %SystemRoot%\system32\drivers\etc\hosts
+#			   (%SystemRoot% value install default is c:\winnt)
+#	- Windows XP/2003: %SystemRoot%\system32\drivers\etc\hosts
+#			   (%SystemRoot% value install default is c:\windows)
+#	- Windows 9x/Me:   %windir%\hosts
+#			   (%windir% value is usually c:\windows)
+#	- Cygwin:	   /etc/hosts
+#
+#	The file contains newline-separated definitions, in the
+#	form ip_address_in_dotted_form name [name ...] names are
+#	whitespace-separated. Lines beginning with an hash (#)
+#	character are comments.
+#
+#	The file is checked at startup and upon configuration.
+#	If set to 'none', it won't be checked.
+#	If append_domain is used, that domain will be added to
+#	domain-local (i.e. not containing any dot character) host
+#	definitions.
+#Default:
+# hosts_file /etc/hosts
+
+#  TAG: append_domain
+#	Appends local domain name to hostnames without any dots in
+#	them.  append_domain must begin with a period.
 #
+#	Be warned there are now Internet names with no dots in
+#	them using only top-domain names, so setting this may
+#	cause some Internet sites to become unavailable.
+#
+#Example:
+# append_domain .yourdomain.com
 #Default:
-# redirector_bypass off
+# none
 
 #  TAG: ignore_unknown_nameservers
 #	By default Squid checks that DNS responses are received
-#	from the same IP addresses that they are sent to.  If they
+#	from the same IP addresses they are sent to.  If they
 #	don't match, Squid ignores the response and writes a warning
 #	message to cache.log.  You can allow responses from unknown
 #	nameservers by setting this option to 'off'.
-#
 #Default:
 # ignore_unknown_nameservers on
 
-#  TAG: digest_generation
-# Note: This option is only available if Squid is rebuilt with the
-#       --enable-cache-digests option
+#  TAG: dns_v4_first
+#	With the IPv6 Internet being as fast or faster than IPv4 Internet
+#	for most networks Squid prefers to contact websites over IPv6.
 #
-#	This controls whether the server will generate a Cache Digest
-#	of its contents.  By default, Cache Digest generation is
-#	enabled if Squid is compiled with USE_CACHE_DIGESTS defined.
+#	This option reverses the order of preference to make Squid contact
+#	dual-stack websites over IPv4 first. Squid will still perform both
+#	IPv6 and IPv4 DNS lookups before connecting.
 #
+#	WARNING:
+#	  This option will restrict the situations under which IPv6
+#	  connectivity is used (and tested). Hiding network problems
+#	  which would otherwise be detected and warned about.
 #Default:
-# digest_generation on
+# dns_v4_first off
 
-#  TAG: digest_bits_per_entry
-# Note: This option is only available if Squid is rebuilt with the
-#       --enable-cache-digests option
+#  TAG: ipcache_size	(number of entries)
+#Default:
+# ipcache_size 1024
+
+#  TAG: ipcache_low	(percent)
+#Default:
+# ipcache_low 90
+
+#  TAG: ipcache_high	(percent)
+#	The size, low-, and high-water marks for the IP cache.
+#Default:
+# ipcache_high 95
+
+#  TAG: fqdncache_size	(number of entries)
+#	Maximum number of FQDN cache entries.
+#Default:
+# fqdncache_size 1024
+
+# MISCELLANEOUS
+# -----------------------------------------------------------------------------
+
+#  TAG: memory_pools	on|off
+#	If set, Squid will keep pools of allocated (but unused) memory
+#	available for future use.  If memory is a premium on your
+#	system and you believe your malloc library outperforms Squid
+#	routines, disable this.
+#Default:
+# memory_pools on
+
+#  TAG: memory_pools_limit	(bytes)
+#	Used only with memory_pools on:
+#	memory_pools_limit 50 MB
 #
-#	This is the number of bits of the server's Cache Digest which
-#	will be associated with the Digest entry for a given HTTP
-#	Method and URL (public key) combination.  The default is 5.
+#	If set to a non-zero value, Squid will keep at most the specified
+#	limit of allocated (but unused) memory in memory pools. All free()
+#	requests that exceed this limit will be handled by your malloc
+#	library. Squid does not pre-allocate any memory, just safe-keeps
+#	objects that otherwise would be free()d. Thus, it is safe to set
+#	memory_pools_limit to a reasonably high value even if your
+#	configuration will use less memory.
 #
+#	If set to none, Squid will keep all memory it can. That is, there
+#	will be no limit on the total amount of memory used for safe-keeping.
+#
+#	To disable memory allocation optimization, do not set
+#	memory_pools_limit to 0 or none. Set memory_pools to "off" instead.
+#
+#	An overhead for maintaining memory pools is not taken into account
+#	when the limit is checked. This overhead is close to four bytes per
+#	object kept. However, pools may actually _save_ memory because of
+#	reduced memory thrashing in your malloc library.
 #Default:
-# digest_bits_per_entry 5
+# memory_pools_limit 5 MB
 
-#  TAG: digest_rebuild_period	(seconds)
-# Note: This option is only available if Squid is rebuilt with the
-#       --enable-cache-digests option
+#  TAG: forwarded_for	on|off|transparent|truncate|delete
+#	If set to "on", Squid will append your client's IP address
+#	in the HTTP requests it forwards. By default it looks like:
 #
-#	This is the number of seconds between Cache Digest rebuilds.
+#		X-Forwarded-For: 192.1.2.3
+#
+#	If set to "off", it will appear as
+#
+#		X-Forwarded-For: unknown
+#
+#	If set to "transparent", Squid will not alter the
+#	X-Forwarded-For header in any way.
 #
+#	If set to "delete", Squid will delete the entire
+#	X-Forwarded-For header.
+#
+#	If set to "truncate", Squid will remove all existing
+#	X-Forwarded-For entries, and place the client IP as the sole entry.
 #Default:
-# digest_rebuild_period 1 hour
+# forwarded_for on
 
-#  TAG: digest_rewrite_period	(seconds)
-# Note: This option is only available if Squid is rebuilt with the
-#       --enable-cache-digests option
+#  TAG: cachemgr_passwd
+#	Specify passwords for cachemgr operations.
 #
-#	This is the number of seconds between Cache Digest writes to
-#	disk.
+#	Usage: cachemgr_passwd password action action ...
 #
+#	Some valid actions are (see cache manager menu for a full list):
+#		5min
+#		60min
+#		asndb
+#		authenticator
+#		cbdata
+#		client_list
+#		comm_incoming
+#		config *
+#		counters
+#		delay
+#		digest_stats
+#		dns
+#		events
+#		filedescriptors
+#		fqdncache
+#		histograms
+#		http_headers
+#		info
+#		io
+#		ipcache
+#		mem
+#		menu
+#		netdb
+#		non_peers
+#		objects
+#		offline_toggle *
+#		pconn
+#		peer_select
+#		reconfigure *
+#		redirector
+#		refresh
+#		server_list
+#		shutdown *
+#		store_digest
+#		storedir
+#		utilization
+#		via_headers
+#		vm_objects
+#
+#	* Indicates actions which will not be performed without a
+#	  valid password, others can be performed if not listed here.
+#
+#	To disable an action, set the password to "disable".
+#	To allow performing an action without a password, set the
+#	password to "none".
+#
+#	Use the keyword "all" to set the same password for all actions.
+#
+#Example:
+# cachemgr_passwd secret shutdown
+# cachemgr_passwd lesssssssecret info stats/objects
+# cachemgr_passwd disable all
 #Default:
-# digest_rewrite_period 1 hour
+# none
 
-#  TAG: digest_swapout_chunk_size	(bytes)
-# Note: This option is only available if Squid is rebuilt with the
-#       --enable-cache-digests option
+#  TAG: client_db	on|off
+#	If you want to disable collecting per-client statistics,
+#	turn off client_db here.
+#Default:
+# client_db on
+
+#  TAG: refresh_all_ims	on|off
+#	When you enable this option, squid will always check
+#	the origin server for an update when a client sends an
+#	If-Modified-Since request.  Many browsers use IMS
+#	requests when the user requests a reload, and this
+#	ensures those clients receive the latest version.
 #
-#	This is the number of bytes of the Cache Digest to write to
-#	disk at a time.  It defaults to 4096 bytes (4KB), the Squid
-#	default swap page.
+#	By default (off), squid may return a Not Modified response
+#	based on the age of the cached version.
+#Default:
+# refresh_all_ims off
+
+#  TAG: reload_into_ims	on|off
+#	When you enable this option, client no-cache or ``reload''
+#	requests will be changed to If-Modified-Since requests.
+#	Doing this VIOLATES the HTTP standard.  Enabling this
+#	feature could make you liable for problems which it
+#	causes.
 #
+#	see also refresh_pattern for a more selective approach.
 #Default:
-# digest_swapout_chunk_size 4096 bytes
+# reload_into_ims off
 
-#  TAG: digest_rebuild_chunk_percentage	(percent, 0-100)
-# Note: This option is only available if Squid is rebuilt with the
-#       --enable-cache-digests option
+#  TAG: connect_retries
+#	This sets the maximum number of connection attempts made for each
+#	TCP connection. The connect_retries attempts must all still
+#	complete within the connection timeout period.
 #
-#	This is the percentage of the Cache Digest to be scanned at a
-#	time.  By default it is set to 10% of the Cache Digest.
+#	The default is not to re-try if the first connection attempt fails.
+#	The (not recommended) maximum is 10 tries.
+#
+#	A warning message will be generated if it is set to a too-high
+#	value and the configured value will be over-ridden.
 #
+#	Note: These re-tries are in addition to forward_max_tries
+#	which limit how many different addresses may be tried to find
+#	a useful server.
 #Default:
-# digest_rebuild_chunk_percentage 10
+# connect_retries 0
 
-#  TAG: chroot
-#	Use this to have Squid do a chroot() while initializing.  This
-#	also causes Squid to fully drop root privileges after
-#	initializing.  This means, for example, that if you use a HTTP
-#	port less than 1024 and try to reconfigure, you will get an
-#	error.
+#  TAG: retry_on_error
+#	If set to ON Squid will automatically retry requests when
+#	receiving an error response with status 403 (Forbidden),
+#	500 (Internal Error), 501 or 503 (Service not available).
+#	Status 502 and 504 (Gateway errors) are always retried.
+#	
+#	This is mainly useful if you are in a complex cache hierarchy to
+#	work around access control errors.
+#	
+#	NOTE: This retry will attempt to find another working destination.
+#	Which is different from the server which just failed.
+#Default:
+# retry_on_error off
+
+#  TAG: as_whois_server
+#	WHOIS server to query for AS numbers.  NOTE: AS numbers are
+#	queried only when Squid starts up, not for every request.
+#Default:
+# as_whois_server whois.ra.net
+
+#  TAG: offline_mode
+#	Enable this option and Squid will never try to validate cached
+#	objects.
+#Default:
+# offline_mode off
+
+#  TAG: uri_whitespace
+#	What to do with requests that have whitespace characters in the
+#	URI.  Options:
 #
+#	strip:  The whitespace characters are stripped out of the URL.
+#		This is the behavior recommended by RFC2396.
+#	deny:   The request is denied.  The user receives an "Invalid
+#		Request" message.
+#	allow:  The request is allowed and the URI is not changed.  The
+#		whitespace characters remain in the URI.  Note the
+#		whitespace is passed to redirector processes if they
+#		are in use.
+#	encode:	The request is allowed and the whitespace characters are
+#		encoded according to RFC1738.  This could be considered
+#		a violation of the HTTP/1.1
+#		RFC because proxies are not allowed to rewrite URI's.
+#	chop:	The request is allowed and the URI is chopped at the
+#		first whitespace.  This might also be considered a
+#		violation.
+#Default:
+# uri_whitespace strip
+
+#  TAG: chroot
+#	Specifies a directory where Squid should do a chroot() while
+#	initializing.  This also causes Squid to fully drop root
+#	privileges after initializing.  This means, for example, if you
+#	use a HTTP port less than 1024 and try to reconfigure, you may
+#	get an error saying that Squid can not open the port.
 #Default:
 # none
 
-#  TAG: client_persistent_connections
-#  TAG: server_persistent_connections
-#	Persistent connection support for clients and servers.  By
-#	default, Squid uses persistent connections (when allowed)
-#	with its clients and servers.  You can use these options to
-#	disable persistent connections with clients and/or servers.
+#  TAG: balance_on_multiple_ip
+#	Modern IP resolvers in squid sort lookup results by preferred access.
+#	By default squid will use these IP in order and only rotates to
+#	the next listed when the most preffered fails.
+#
+#	Some load balancing servers based on round robin DNS have been
+#	found not to preserve user session state across requests
+#	to different IP addresses.
 #
+#	Enabling this directive Squid rotates IP's per request.
 #Default:
-# client_persistent_connections on
-# server_persistent_connections on
+# balance_on_multiple_ip off
 
 #  TAG: pipeline_prefetch
 #	To boost the performance of pipelined requests to closer
-#	match that of a non-proxied environment Squid tries to fetch
-#	up to two requests in parallell from a pipeline.
+#	match that of a non-proxied environment Squid can try to fetch
+#	up to two requests in parallel from a pipeline.
 #
-#Default:
-# pipeline_prefetch on
-
-#  TAG: extension_methods
-#	Squid only knows about standardized HTTP request methods.
-#	You can add up to 20 additional "extension" methods here.
+#	Defaults to off for bandwidth management and access logging
+#	reasons.
 #
+#	WARNING: pipelining breaks NTLM and Negotiate/Kerberos authentication.
 #Default:
-# none
+# pipeline_prefetch off
 
 #  TAG: high_response_time_warning	(msec)
 #	If the one-minute median response time exceeds this value,
 #	Squid prints a WARNING with debug level 0 to get the
 #	administrators attention.  The value is in milliseconds.
-#
 #Default:
 # high_response_time_warning 0
 
@@ -2708,53 +6588,85 @@ icp_access allow all
 #	value, Squid prints a WARNING with debug level 0 to get
 #	the administrators attention.  The value is in page faults
 #	per second.
-#
 #Default:
 # high_page_fault_warning 0
 
 #  TAG: high_memory_warning
 #	If the memory usage (as determined by mallinfo) exceeds
-#	value, Squid prints a WARNING with debug level 0 to get
+#	this amount, Squid prints a WARNING with debug level 0 to get
 #	the administrators attention.
-#
 #Default:
-# high_memory_warning 0
+# high_memory_warning 0 KB
 
-#  TAG: store_dir_select_algorithm
-#	Set this to 'round-robin' as an alternative.
-#
+#  TAG: sleep_after_fork	(microseconds)
+#	When this is set to a non-zero value, the main Squid process
+#	sleeps the specified number of microseconds after a fork()
+#	system call. This sleep may help the situation where your
+#	system reports fork() failures due to lack of (virtual)
+#	memory. Note, however, if you have a lot of child
+#	processes, these sleep delays will add up and your
+#	Squid will not service requests for some amount of time
+#	until all the child processes have been started.
+#	On Windows value less then 1000 (1 milliseconds) are
+#	rounded to 1000.
 #Default:
-# store_dir_select_algorithm least-load
+# sleep_after_fork 0
 
-#  TAG: forward_log
+#  TAG: windows_ipaddrchangemonitor	on|off
 # Note: This option is only available if Squid is rebuilt with the
-#       -DWIP_FWD_LOG option
+#       MS Windows
 #
-#	Logs the server-side requests.
+#	On Windows Squid by default will monitor IP address changes and will 
+#	reconfigure itself after any detected event. This is very useful for
+#	proxies connected to internet with dial-up interfaces.
+#	In some cases (a Proxy server acting as VPN gateway is one) it could be
+#	desiderable to disable this behaviour setting this to 'off'.
+#	Note: after changing this, Squid service must be restarted.
+#Default:
+# windows_ipaddrchangemonitor on
+
+#  TAG: eui_lookup
+#	Whether to lookup the EUI or MAC address of a connected client.
+#Default:
+# eui_lookup on
+
+#  TAG: max_filedescriptors
+#	The maximum number of filedescriptors supported.
 #
-#	This is currently work in progress.
+#	The default "0" means Squid inherits the current ulimit setting.
 #
+#	Note: Changing this requires a restart of Squid. Also
+#	not all comm loops supports large values.
 #Default:
-# none
+# max_filedescriptors 0
 
-#  TAG: ie_refresh	on|off
-#	Microsoft Internet Explorer up until version 5.5 Service
-#	Pack 1 has an issue with transparent proxies, wherein it
-#	is impossible to force a refresh.  Turning this on provides
-#	a partial fix to the problem, by causing all IMS-REFRESH
-#	requests from older IE versions to check the origin server
-#	for fresh content.  This reduces hit ratio by some amount
-#	(~10% in my experience), but allows users to actually get
-#	fresh content when they want it.  Note that because Squid
-#	cannot tell if the user is using 5.5 or 5.5SP1, the behavior
-#	of 5.5 is unchanged from old versions of Squid (i.e. a
-#	forced refresh is impossible).  Newer versions of IE will,
-#	hopefully, continue to have the new behavior and will be
-#	handled based on that assumption.  This option defaults to
-#	the old Squid behavior, which is better for hit ratios but
-#	worse for clients using IE, if they need to be able to
-#	force fresh content.
+#  TAG: workers
+#	Number of main Squid processes or "workers" to fork and maintain.
+#	0: "no daemon" mode, like running "squid -N ..."
+#	1: "no SMP" mode, start one main Squid process daemon (default)
+#	N: start N main Squid process daemons (i.e., SMP mode)
 #
+#	In SMP mode, each worker does nearly all what a single Squid daemon
+#	does (e.g., listen on http_port and forward HTTP requests).
 #Default:
-# ie_refresh off
+# workers 1
+
+#  TAG: cpu_affinity_map
+#	Usage: cpu_affinity_map process_numbers=P1,P2,... cores=C1,C2,...
+#
+#	Sets 1:1 mapping between Squid processes and CPU cores. For example,
+#
+#	    cpu_affinity_map process_numbers=1,2,3,4 cores=1,3,5,7
+#
+#	affects processes 1 through 4 only and places them on the first
+#	four even cores, starting with core #1.
+#
+#	CPU cores are numbered starting from 1. Requires support for
+#	sched_getaffinity(2) and sched_setaffinity(2) system calls.
+#
+#	Multiple cpu_affinity_map options are merged.
+#
+#	See also: workers
+#Default:
+# none