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Add Introduction.xml
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Shorewall-docs/Introduction.xml
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118
Shorewall-docs/Introduction.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!-- $Id$ -->
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<article id="usefull_links">
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<articleinfo>
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<title>Introduction</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>2003/12/23</pubdate>
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<copyright>
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<year>2003</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 type="" url="Copyright.htm">GNU Free Documentation License</ulink></quote>.</para>
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</legalnotice>
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</articleinfo>
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<section>
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<title>Introduction</title>
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<para>The information in this document applies only to 1.4.x releases of
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Shorewall.</para>
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<section>
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<title>Glossary</title>
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<itemizedlist>
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<listitem>
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<para><ulink url="http://www.netfilter.org">Netfilter</ulink> - the
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packet filter facility built into the 2.4 and later Linux kernels.
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</para>
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</listitem>
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<listitem>
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<para>ipchains - the packet filter facility built into the 2.2 Linux
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kernels. Also the name of the utility program used to configure and
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control that facility. Netfilter can be used in ipchains
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compatibility mode.</para>
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</listitem>
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<listitem>
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<para>iptables - the utility program used to configure and control
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Netfilter. The term 'iptables' is often used to refer to the
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combination of iptables+Netfilter (with Netfilter not in ipchains
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compatibility mode).</para>
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</listitem>
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</itemizedlist>
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</section>
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<section>
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<title>What is Shorewall?</title>
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<para>The Shoreline Firewall, more commonly known as
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"Shorewall", is high-level tool for configuring Netfilter. You
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describe your firewall/gateway requirements using entries in a set of
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configuration files. Shorewall reads those configuration files and with
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the help of the iptables utility, Shorewall configures Netfilter to
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match your requirements. Shorewall can be used on a dedicated firewall
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system, a multi-function gateway/router/server or on a standalone
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GNU/Linux system. Shorewall does not use Netfilter's ipchains
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compatibility mode and can thus take advantage of Netfilter's
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connection state tracking capabilities.</para>
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<para>Shorewall is not a daemon. Once Shorewall has configured
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Netfilter, it's job is complete although the <ulink
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url="starting_and_stopping_shorewall.htm">/sbin/shorewall program can be
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used at any time to monitor the Netfilter firewall</ulink>.</para>
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</section>
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<section>
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<title>Getting Started with Shorewall</title>
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<para>New to Shorewall? Start by selecting the <ulink
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url="shorewall_quickstart_guide.htm">QuickStart Guide</ulink> that most
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closely match your environment and follow the step by step instructions.</para>
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</section>
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<section>
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<title>Looking for Information?</title>
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<para>The <ulink url="shorewall_quickstart_guide.htm#Documentation">Documentation
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Index</ulink> is a good place to start.</para>
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</section>
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</section>
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<section>
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<title>License</title>
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<para>This program is free software; you can redistribute it and/or modify
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it under the terms of <ulink url="http://www.gnu.org/licenses/gpl.html">Version
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2 of the GNU General Public License</ulink> as published by the Free
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Software Foundation.</para>
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<para>This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more detail.</para>
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<para>You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 675 Mass Ave, Cambridge, MA 02139, USA</para>
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</section>
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</article>
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