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git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@8609 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
107 lines
3.7 KiB
XML
107 lines
3.7 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
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"http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd">
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<article id="shorewall_prerequisites">
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<!--$Id$-->
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<articleinfo>
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<title>Shorewall Requirements</title>
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<author>
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<firstname>Tom</firstname>
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<surname>Eastep</surname>
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</author>
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<pubdate><?dbtimestamp format="Y/m/d"?></pubdate>
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<copyright>
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<year>2001-2006</year>
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<holder>Thomas M Eastep</holder>
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</copyright>
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<legalnotice>
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<para>Permission is granted to copy, distribute and/or modify this
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document under the terms of the GNU Free Documentation License, Version
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1.2 or any later version published by the Free Software Foundation; with
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no Invariant Sections, with no Front-Cover, and with no Back-Cover
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Texts. A copy of the license is included in the section entitled
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<quote><ulink url="GnuCopyright.htm">GNU Free Documentation
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License</ulink></quote>.</para>
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</legalnotice>
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</articleinfo>
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<caution>
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<para><emphasis role="bold">This article applies to Shorewall 3.0 and
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later. If you are running a version of Shorewall earlier than Shorewall
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3.0.0 then please see the documentation for that
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release.</emphasis></para>
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</caution>
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<section id="Requirements">
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<title>Shorewall Requires:</title>
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<itemizedlist>
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<listitem>
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<para>A <emphasis role="bold">Linux</emphasis> kernel that supports
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netfilter (No, it won't work on BSD or Solaris). I've tested with
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2.4.2 - 2.6.16. Check <ulink url="kernel.htm">here</ulink> for kernel
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configuration information.</para>
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</listitem>
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<listitem>
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<para>iptables 1.2 or later (but I recommend at least version
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1.3.3)</para>
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</listitem>
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<listitem>
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<para>Iproute (<quote>ip</quote> and "tc" utilities). The iproute
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package is included with most distributions but may not be installed
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by default. The official download site is <ulink type="remote"
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url="http://developer.osdl.org/dev/iproute2/download/">http://developer.osdl.org/dev/iproute2/download/</ulink>.</para>
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</listitem>
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<listitem>
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<para>A Bourne shell or derivative such as bash or ash. This shell
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must have correct support for variable expansion formats
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${<emphasis>variable%pattern</emphasis>},
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${<emphasis>variable%%pattern</emphasis>},
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${<emphasis>variable#pattern</emphasis>} and
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${<emphasis>variable##pattern</emphasis>}.</para>
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</listitem>
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<listitem>
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<para>Your shell must produce a sensible result when a number n (128
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<= n <= 255) is left shifted by 24 bits. You can check this at a
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shell prompt by:<itemizedlist>
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<listitem>
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<para>echo $((128 << 24))</para>
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</listitem>
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<listitem>
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<para>The result must be either 2147483648 or
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-2147483648.</para>
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</listitem>
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</itemizedlist></para>
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</listitem>
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<listitem>
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<para>The firewall monitoring display is greatly improved if you have
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awk (gawk) installed.</para>
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</listitem>
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</itemizedlist>
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</section>
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<section id="Perl">
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<title>Shorewall-perl Requirements</title>
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<para><ulink url="Shorewall-perl.html">Shorewall-perl</ulink> is a
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re-implementation of the Shorewall configuration compiler written in Perl.
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It is much faster than the classic Shorewall-shell compiler and produces a
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firewall script that runs much faster. It's prerequisites are described in
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<ulink url="Shorewall-perl.html#Prerequisites">the Shorewall-perl
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article</ulink>.</para>
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</section>
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</article>
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