added sysctl.conf, host.conf and /etc/issue{.net} customization.

7 files changed, 157 insertions, 0 deletions

diff --git a/init-sh/level0.sh b/init-sh/level0.sh
index 927b6eb..b893546 100755
--- a/init-sh/level0.sh
+++ b/init-sh/level0.sh
@@ -77,6 +77,21 @@ echo "Adding system users to specific groups :"
 /usr/share/msec/grpuser.sh --refresh
 echo -e "done.\n"
 
+# icmp echo
+echo "Enabling icmp echo :"
+AddRules "net.ipv4.icmp_echo_ignore_all=0" /etc/sysctl.conf
+AddRules "net.ipv4.icmp_echo_ignore_broadcasts=0" /etc/sysctl.conf
+
+# bad error
+echo "Disabling bad error message Protection :"
+AddRules "net.ipv4.icmp_ignore_bogus_error_responses=0" /etc/sysctl.conf
+
+# log strange packets
+echo "Disabling logging Spoofed Packets, Source Routed Packets, Redirect Packets :"
+AddRules "net.ipv4.conf.all.log_martians=0" /etc/sysctl.conf
+
+LoadSysctl
+
 AllowAutologin
 
 # Boot on a shell / authorize ctrl-alt-del
diff --git a/init-sh/level1.sh b/init-sh/level1.sh
index c8b20a5..a40a22e 100755
--- a/init-sh/level1.sh
+++ b/init-sh/level1.sh
@@ -78,6 +78,21 @@ echo "Adding system users to specific groups :"
 grpconv
 echo -e "done.\n"
 
+# icmp echo
+echo "Enabling icmp echo :"
+AddRules "net.ipv4.icmp_echo_ignore_all=0" /etc/sysctl.conf
+AddRules "net.ipv4.icmp_echo_ignore_broadcasts=0" /etc/sysctl.conf
+
+# bad error
+echo "Disabling bad error message Protection :"
+AddRules "net.ipv4.icmp_ignore_bogus_error_responses=0" /etc/sysctl.conf
+
+# log strange packets
+echo "Disabling logging Spoofed Packets, Source Routed Packets, Redirect Packets :"
+AddRules "net.ipv4.conf.all.log_martians=0" /etc/sysctl.conf
+
+LoadSysctl
+
 AllowAutologin
 
 # Do not boot on a shell
diff --git a/init-sh/level2.sh b/init-sh/level2.sh
index 1be954d..8a82518 100755
--- a/init-sh/level2.sh
+++ b/init-sh/level2.sh
@@ -79,6 +79,21 @@ echo "Adding system users to specifics groups :"
 grpconv
 echo -e "done.\n"
 
+# icmp echo
+echo "Enabling icmp echo :"
+AddRules "net.ipv4.icmp_echo_ignore_all=0" /etc/sysctl.conf
+AddRules "net.ipv4.icmp_echo_ignore_broadcasts=0" /etc/sysctl.conf
+
+# bad error
+echo "Disabling bad error message Protection :"
+AddRules "net.ipv4.icmp_ignore_bogus_error_responses=0" /etc/sysctl.conf
+
+# log strange packets
+echo "Disabling logging Spoofed Packets, Source Routed Packets, Redirect Packets :"
+AddRules "net.ipv4.conf.all.log_martians=0" /etc/sysctl.conf
+
+LoadSysctl
+
 AllowAutologin
 
 # Do not boot on a shell
diff --git a/init-sh/level3.sh b/init-sh/level3.sh
index 26022fc..83fccf8 100755
--- a/init-sh/level3.sh
+++ b/init-sh/level3.sh
@@ -76,6 +76,21 @@ echo "Setting umask to 022 (u=rw,g=r,o=r) :"
 AddRules "UMASK_ROOT=022" /etc/sysconfig/msec
 AddRules "UMASK_USER=022" /etc/sysconfig/msec
 
+# icmp echo
+echo "Enabling icmp echo :"
+AddRules "net.ipv4.icmp_echo_ignore_all=0" /etc/sysctl.conf
+AddRules "net.ipv4.icmp_echo_ignore_broadcasts=1" /etc/sysctl.conf
+
+# bad error
+echo "Enabling bad error message Protection :"
+AddRules "net.ipv4.icmp_ignore_bogus_error_responses=1" /etc/sysctl.conf
+
+# log strange packets
+echo "Enabling logging Spoofed Packets, Source Routed Packets, Redirect Packets :"
+AddRules "net.ipv4.conf.all.log_martians=1" /etc/sysctl.conf
+
+LoadSysctl
+
 # Do not boot on a shell
 AllowReboot
 
diff --git a/init-sh/level4.sh b/init-sh/level4.sh
index 69df158..b4d3d7a 100755
--- a/init-sh/level4.sh
+++ b/init-sh/level4.sh
@@ -111,6 +111,38 @@ if [[ -f /lib/libsafe.so.2 ]]; then
     AddRules "/lib/libsafe.so.2" /etc/ld.so.preload
 fi
 
+# Console timeout
+echo "Setting console timeout :"
+AddRules "TMOUT=7200" /etc/sysconfig/msec
+
+# No history file
+echo "No history file :"
+AddRules "HISTFILESIZE=0" /etc/sysconfig/msec
+
+# Ip spoofing protection
+echo "IP spoofing protection :"
+AddRules "nospoof on" /etc/host.conf
+AddRules "spoofalert on" /etc/host.conf
+
+# icmp echo
+echo "Ignoring icmp echo :"
+AddRules "net.ipv4.icmp_echo_ignore_all=1" /etc/sysctl.conf
+AddRules "net.ipv4.icmp_echo_ignore_broadcasts=1" /etc/sysctl.conf
+
+# bad error
+echo "Enabling bad error message Protection :"
+AddRules "net.ipv4.icmp_ignore_bogus_error_responses=1" /etc/sysctl.conf
+
+# log strange packets
+echo "Enabling logging Spoofed Packets, Source Routed Packets, Redirect Packets :"
+AddRules "net.ipv4.conf.all.log_martians=1" /etc/sysctl.conf
+
+LoadSysctl
+
+# issues
+echo "Removing /etc/issue.net :"
+RemoveIssueNet
+
 # Do not boot on a shell
 ForbidReboot
 
diff --git a/init-sh/level5.sh b/init-sh/level5.sh
index 1fa9a9d..070c770 100755
--- a/init-sh/level5.sh
+++ b/init-sh/level5.sh
@@ -123,6 +123,39 @@ if [[ -f /lib/libsafe.so.2 ]]; then
     AddRules "/lib/libsafe.so.2" /etc/ld.so.preload
 fi
 
+# Console timeout
+echo "Setting console timeout :"
+AddRules "TMOUT=180" /etc/sysconfig/msec
+
+# No history file
+echo "No history file :"
+AddRules "HISTFILESIZE=0" /etc/sysconfig/msec
+
+# Ip spoofing protection
+echo "IP spoofing protection :"
+AddRules "nospoof on" /etc/host.conf
+AddRules "spoofalert on" /etc/host.conf
+
+# icmp echo
+echo "Ignoring icmp echo :"
+AddRules "net.ipv4.icmp_echo_ignore_all=1" /etc/sysctl.conf
+AddRules "net.ipv4.icmp_echo_ignore_broadcasts=1" /etc/sysctl.conf
+
+# bad error
+echo "Enabling bad error message Protection :"
+AddRules "net.ipv4.icmp_ignore_bogus_error_responses=1" /etc/sysctl.conf
+
+# log strange packets
+echo "Enabling logging Spoofed Packets, Source Routed Packets, Redirect Packets :"
+AddRules "net.ipv4.conf.all.log_martians=1" /etc/sysctl.conf
+
+LoadSysctl
+
+# issues
+echo "Removing /etc/issue and /etc/issue.net :"
+RemoveIssue
+RemoveIssueNet
+
 # Do not boot on a shell
 ForbidReboot
 ForbidAutologin
diff --git a/init-sh/levelsnf.sh b/init-sh/levelsnf.sh
index 349d200..6aba191 100755
--- a/init-sh/levelsnf.sh
+++ b/init-sh/levelsnf.sh
@@ -87,6 +87,38 @@ AddRules "0 4 * * *    root    /usr/share/msec/security.sh" /etc/crontab
 echo "Setting secure level variable to snf :"
 AddRules "SECURE_LEVEL=snf" /etc/sysconfig/msec
 
+# Console timeout
+echo "Setting console timeout :"
+AddRules "TMOUT=180" /etc/sysconfig/msec
+
+# No history file
+echo "No history file :"
+AddRules "HISTFILESIZE=0" /etc/sysconfig/msec
+
+# Ip spoofing protection
+echo "IP spoofing protection :"
+AddRules "nospoof on" /etc/host.conf
+AddRules "spoofalert on" /etc/host.conf
+
+# icmp echo
+echo "Ignoring icmp echo :"
+AddRules "net.ipv4.icmp_echo_ignore_all=1" /etc/sysctl.conf
+AddRules "net.ipv4.icmp_echo_ignore_broadcasts=1" /etc/sysctl.conf
+
+# bad error
+echo "Enabling bad error message Protection :"
+AddRules "net.ipv4.icmp_ignore_bogus_error_responses=1" /etc/sysctl.conf
+
+# log strange packets
+echo "Enabling logging Spoofed Packets, Source Routed Packets, Redirect Packets :"
+AddRules "net.ipv4.conf.all.log_martians=1" /etc/sysctl.conf
+
+LoadSysctl
+
+# issues
+echo "Removing /etc/issue.net :"
+RemoveIssueNet
+
 export SECURE_LEVEL=snf
 
 IFS="