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</style><link rel="shortcut icon" href="https://www.mageia.org/g/favicon.png" type="image/x-icon"/><link rel="stylesheet" type="text/css" href="../../common/css/positioning.css"/><link rel="stylesheet" type="text/css" href="../../common/jquery/theme-redmond/jquery-ui-1.8.2.custom.css"/><link rel="stylesheet" type="text/css" href="../../common/jquery/treeview/jquery.treeview.css"/><link rel="stylesheet" type="text/css" href="webhelp-default.css"/><link rel="stylesheet" type="text/css" href="webhelp-custom.css"/><script type="text/javascript" src="../../common/jquery/jquery-1.4.2.min.js"><!----></script><script type="text/javascript" src="../../common/jquery/jquery-ui-1.8.2.custom.min.js"><!----></script><script type="text/javascript" src="../../common/jquery/jquery.cookie.js"><!----></script><script type="text/javascript" src="../../common/jquery/treeview/jquery.treeview.min.js"><!----></script><script type="text/javascript" src="search/htmlFileList.js"><!----></script><script type="text/javascript" src="search/htmlFileInfoList.js"><!----></script><script type="text/javascript" src="nwSearchFnt.js"><!----></script><script type="text/javascript" src="search/stemmers/en_stemmer.js"><!--//make this scalable to other languages as well.--></script><script type="text/javascript" src="search/index-1.js"><!----></script><script type="text/javascript" src="search/index-2.js"><!----></script><script type="text/javascript" src="search/index-3.js"><!----></script></head><body><div xmlns="" id="header"><div id="navheader"><!----><table><tr><td style="height: 28px; width: 16px;"><a id="showHideButton" onclick="showHideToc();" class="pointLeft" title="Hide TOC tree">.
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<a accesskey="n" href="installUpdates.html">Next</a></td></tr></table></div><div id="headerlogo"><img src="https://doc.mageia.org/g/mageia-2013-200p.png" alt="Company Logo"/></div><h1 id="pagetitle">Firewall<br/> </h1></div><div id="content"><!----><div xml:lang="" class="section" title="Firewall"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="firewall"><!----></a>Firewall</h2></div></div></div><p><a id="firewall-pa1"><!----></a>This section allows to configure
some simple firewall rules: they determine which type of message from the
Internet will be accepted by the target system. This, in turn, allows the
corresponding services on the system to be accessible from the
Internet.</p><p>In the default setting, no button is checked - no service of the
system is accessibly from the network. The "<span class="emphasis"><em>Everything (no
firewall)</em></span>" button has a particular role: it enables access to all
services of the machine - an option that does not make much sense in the
context of the installer since it would create a totally unprotected system.
Its veritable use is in the context of the Mageia Control Center (which uses
the same GUI layout) for temporarily disabling the entire set of firewall
rules for testing and debugging purposes.</p><p>All other checkbuttons are more or less self-explanatory. As an
example, you will check the "CUPS server" button if you want printers on
your machine to be accessible from the network.</p><p><span class="bold"><strong>Advanced</strong></span></p><p>The set of checkbuttons only comprises the most common services. The
"Advanced" button allows to enable messages that correspond to a service for
which no checkbutton exists. The "<span class="emphasis"><em>Advanced</em></span>" button
opens a window where you can enable a series of services by typing a list of
couples (blank separated)</p><p><span class="emphasis"><em><port-number>/<protocol></em></span></p><table border="0" summary="Simple list" class="simplelist"><tr><td>- <span class="emphasis"><em><port-number></em></span> is the value of the
port assigned to the service you want to enable (e.g. 873 for the RSYNC
service) as defined in <span class="emphasis"><em>RFC-433</em></span>;</td></tr><tr><td>- <span class="emphasis"><em><protocol></em></span> is one of
<span class="emphasis"><em>TCP</em></span> or <span class="emphasis"><em>UDP</em></span> - the internet
protocol that is used by the service.</td></tr></table><p>For instance, the entry for enabling access to the RSYNC service
therefore is <span class="emphasis"><em>873/tcp</em></span>.</p><p>In case a service is implemented to use both protocols, you specify 2
couples for the same port.</p></div><script xmlns="" type="text/javascript" src="main.js"><!----></script><hr xmlns=""/><div xmlns="" class="copyright">© Mageia</div><div xmlns="" class="license"><a href="index.html#CC_BY-SA">CC BY-SA 3.0</a></div><div id="upload_date">Uploaded on 02/10/2016</div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="securityLevel.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="installUpdates.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> </td></tr></table></div></div><div><div id="leftnavigation"><div id="tabs"><ul><li><a href="#treeDiv"><em>Contents</em></a></li><li><a href="#searchDiv"><em>Search</em></a></li></ul><div id="treeDiv"><img src="../../common/images/loading.gif" alt="loading table of contents..." id="tocLoading" style="display:block;"/><div id="ulTreeDiv" style="display:none"><ul id="tree" class="filetree"><li><span class="file section"><a href="Select-and-use-ISOs.html">Select and use ISOs</a></span><ul><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e18">Introduction</a></span></li><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e28">Media</a></span><ul><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e30">Definition</a></span></li><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e35">Classical installation media</a></span><ul><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e37">Common features</a></span></li><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e44">DVD</a></span></li><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e55">DVD dual arch</a></span></li></ul></li><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e66">Live media</a></span><ul><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e68">Common features</a></span></li><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e82">Live CD KDE</a></span></li><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e91">Live CD GNOME</a></span></li><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e100">Live DVD KDE</a></span></li><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e109">Live DVD GNOME</a></span></li></ul></li><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e118">Boot-only CD media</a></span><ul><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e120">Common features</a></span></li><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e131">boot.iso</a></span></li><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e136">boot-nonfree.iso</a></span></li></ul></li></ul></li><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e141">Downloading and Checking Media</a></span><ul><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e143">Downloading</a></span></li><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e155">Checking the downloaded media
integrity</a></span></li></ul></li><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e168">Burn or dump the ISO</a></span><ul><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e171">Burning the ISO to a CD/DVD</a></span></li><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e176">Dump the ISO to a USB stick</a></span><ul><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e182">Using a graphical tool within Mageia</a></span></li><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e186">Using a graphical tool within Windows</a></span></li><li><span class="file section"><a href="Select-and-use-ISOs.html#d4e193">Using Command line within a GNU/Linux system</a></span></li></ul></li></ul></li></ul></li><li><span class="file section"><a href="installer.html">DrakX, the Mageia Installer</a></span><ul><li><span class="file section"><a href="installer.html#installationSteps">The installation steps</a></span></li><li><span class="file section"><a href="installer.html#installationProblems">Installation Problems and
Possible Solutions</a></span><ul><li><span class="file section"><a href="installer.html#noX">No Graphical Interface</a></span></li><li><span class="file section"><a href="installer.html#installFreezes">The Install Freezes</a></span></li><li><span class="file section"><a href="installer.html#kernelOptions">RAM problem</a></span></li><li><span class="file section"><a href="installer.html#DynamicPartitions">Dynamic partitions</a></span></li></ul></li></ul></li><li><span class="file section"><a href="selectLanguage.html">Please choose a language to use</a></span></li><li><span class="file section"><a href="acceptLicense.html">License and Release Notes</a></span><ul><li><span class="file section"><a href="acceptLicense.html#license">License Agreement</a></span></li><li><span class="file section"><a href="acceptLicense.html#releaseNotes">Release Notes</a></span></li></ul></li><li><span class="file section"><a href="setupSCSI.html">Setup SCSI</a></span></li><li><span class="file section"><a href="selectInstallClass.html">Install or Upgrade</a></span></li><li><span class="file section"><a href="selectKeyboard.html">Keyboard</a></span></li><li><span class="file section"><a href="doPartitionDisks.html">Partitioning</a></span></li><li><span class="file section"><a href="ask_mntpoint_s.html">Choose the mount points</a></span></li><li><span class="file section"><a href="takeOverHdConfirm.html">Confirm hard disk to be
formatted</a></span></li><li><span class="file section"><a href="diskdrake.html">Custom disk partitioning with
DiskDrake</a></span></li><li><span class="file section"><a href="formatPartitions.html">Formatting</a></span></li><li><span class="file section"><a href="add_supplemental_media.html">Media Selection (Configure Supplemental Installation Media)</a></span></li><li><span class="file section"><a href="media_selection.html">Media Selection (Nonfree)</a></span></li><li><span class="file section"><a href="chooseDesktop.html">Desktop Selection</a></span></li><li><span class="file section"><a href="choosePackageGroups.html">Package Group Selection</a></span></li><li><span class="file section"><a href="minimal-install.html">Minimal Install</a></span></li><li><span class="file section"><a href="choosePackagesTree.html">Choose Individual
Packages</a></span></li><li><span class="file section"><a href="addUser.html">User and Superuser Management</a></span><ul><li><span class="file section"><a href="addUser.html#root-password">Set Administrator (root)
Password:</a></span></li><li><span class="file section"><a href="addUser.html#enterUser">Enter a user</a></span></li><li><span class="file section"><a href="addUser.html#addUserAdvanced">Advanced User Management</a></span></li></ul></li><li><span class="file section"><a href="configureX_chooser.html">Graphic Card and Monitor
Configuration</a></span></li><li><span class="file section"><a href="configureX_card_list.html">Choose an X Server (Configure
your Graphic Card)</a></span></li><li><span class="file section"><a href="configureX_monitor.html">Choosing your Monitor</a></span></li><li><span class="file section"><a href="setupBootloader.html">Bootloader main options</a></span><ul><li><span class="file section"><a href="setupBootloader.html#d4e864">With a Bios system</a></span><ul><li><span class="file section"><a href="setupBootloader.html#usingMageiaBootloader">Using a Mageia
bootloader</a></span></li><li><span class="file section"><a href="setupBootloader.html#usingExistingBootloader">Using an
existing bootloader</a></span></li><li><span class="file section"><a href="setupBootloader.html#advancedOptionBootloader">Bootloader
advanced option</a></span></li></ul></li><li><span class="file section"><a href="setupBootloader.html#d4e898">With an UEFI system</a></span></li></ul></li><li><span class="file section"><a href="setupBootloaderAddEntry.html">Add or Modify a Boot Menu
Entry</a></span><ul><li><span class="file section"><a href="setupBootloaderAddEntry.html#d4e912">With a Bios system</a></span></li><li><span class="file section"><a href="setupBootloaderAddEntry.html#d4e929">With an UEFI system</a></span></li></ul></li><li><span class="file section"><a href="misc-params.html">Summary of miscellaneous
parameters</a></span><ul><li><span class="file section"><a href="misc-params.html#misc-params-system">System parameters</a></span></li><li><span class="file section"><a href="misc-params.html#misc-params-hardware">Hardware parameters</a></span></li><li><span class="file section"><a href="misc-params.html#misc-params-network">Network and Internet
parameters</a></span></li><li><span class="file section"><a href="misc-params.html#misc-params-security">Security</a></span></li></ul></li><li><span class="file section"><a href="configureTimezoneUTC.html">Configure your Timezone</a></span></li><li><span class="file section"><a href="selectCountry.html">Select your Country /
Region</a></span><ul><li><span class="file section"><a href="selectCountry.html#inputMethod">Input method</a></span></li></ul></li><li><span class="file section"><a href="configureServices.html">Configure your
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