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<h1 align="center"><!--mstheme--><font face="times new roman, Times New Roman, Times" color="#666666">Shorewall QuickStart Guides<br>
Version 3.0<!--mstheme--></font></h1>
<p align="center">With thanks to Richard who reminded me once again that we must
all first walk before we can run.</p>
<h2><!--mstheme--><font face="times new roman, Times New Roman, Times" color="#666666">The Guides<!--mstheme--></font></h2>
<p>These guides provide step-by-step instructions for configuring Shorewall in
common firewall setups.</p>
<p>The following guides are for firewalls with a single external IP address:</p>
<!--mstheme--></font><!--msthemelist--><table border="0" cellpadding="0" cellspacing="0" width="100%">
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="standalone.htm">Standalone</a> Linux System<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="two-interface.htm">Two-interface</a> Linux System acting as a
firewall/router for a small local network<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="three-interface.htm">Three-interface</a> Linux System acting as a
firewall/router for a small local network and a DMZ.<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--></table><!--mstheme--><font face="arial, Arial, Helvetica">
<p>The above guides are designed to get your first firewall up and running
quickly in the three most common Shorewall configurations.</p>
<p>The <a href="shorewall_setup_guide.htm">Shorewall Setup Guide</a> outlines
the steps necessary to set up a firewall where there are multiple public IP
addresses involved or if you want to learn more about Shorewall than is
explained in the single-address guides above.</p>
<!--mstheme--></font><!--msthemelist--><table border="0" cellpadding="0" cellspacing="0" width="100%">
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="shorewall_setup_guide.htm#Introduction">1.0 Introduction</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="shorewall_setup_guide.htm#Concepts">2.0 Shorewall Concepts</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="shorewall_setup_guide.htm#Interfaces">3.0 Network Interfaces</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="shorewall_setup_guide.htm#Addressing">4.0 Addressing, Subnets and Routing</a><!--mstheme--></font><!--msthemelist--><table border="0" cellpadding="0" cellspacing="0" width="100%">
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="shorewall_setup_guide.htm#Addresses">4.1 IP Addresses</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="shorewall_setup_guide.htm#Subnets">4.2 Subnets</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="shorewall_setup_guide.htm#Routing">4.3 Routing</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="shorewall_setup_guide.htm#ARP">4.4 Address Resolution Protocol</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--></table><!--mstheme--><font face="arial, Arial, Helvetica">
<!--mstheme--></font><!--msthemelist--><table border="0" cellpadding="0" cellspacing="0" width="100%">
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="shorewall_setup_guide.htm#RFC1918">4.5 RFC 1918</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--></table><!--mstheme--><font face="arial, Arial, Helvetica">
<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="shorewall_setup_guide.htm#Options">5.0 Setting up your Network</a><!--mstheme--></font><!--msthemelist--><table border="0" cellpadding="0" cellspacing="0" width="100%">
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="shorewall_setup_guide.htm#Routed">5.1 Routed</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--></table><!--mstheme--><font face="arial, Arial, Helvetica">
<!--mstheme--></font><!--msthemelist--><table border="0" cellpadding="0" cellspacing="0" width="100%">
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="shorewall_setup_guide.htm#NonRouted">5.2 Non-routed</a><!--mstheme--></font><!--msthemelist--><table border="0" cellpadding="0" cellspacing="0" width="100%">
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul3.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="shorewall_setup_guide.htm#SNAT">5.2.1 SNAT</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul3.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="shorewall_setup_guide.htm#DNAT">5.2.2 DNAT</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul3.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="shorewall_setup_guide.htm#ProxyARP">5.2.3 Proxy ARP</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul3.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="shorewall_setup_guide.htm#NAT">5.2.4 Static NAT</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--></table><!--mstheme--><font face="arial, Arial, Helvetica">
<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="shorewall_setup_guide.htm#Rules">5.3 Rules</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="shorewall_setup_guide.htm#OddsAndEnds">5.4 Odds and Ends</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--></table><!--mstheme--><font face="arial, Arial, Helvetica">
<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="shorewall_setup_guide.htm#DNS">6.0 DNS</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="shorewall_setup_guide.htm#StartingAndStopping">7.0 Starting and
Stopping the Firewall</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--></table><!--mstheme--><font face="arial, Arial, Helvetica">
<h2><!--mstheme--><font face="times new roman, Times New Roman, Times" color="#666666"><a name="Documentation"></a>Additional Documentation<!--mstheme--></font></h2>
<p>The following documentation covers a variety of topics and supplements the
QuickStart Guides described above.</p>
<!--mstheme--></font><!--msthemelist--><table border="0" cellpadding="0" cellspacing="0" width="100%">
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="blacklisting_support.htm">Blacklisting</a><!--mstheme--></font><!--msthemelist--><table border="0" cellpadding="0" cellspacing="0" width="100%">
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica">Static Blacklisting using /etc/shorewall/blacklist<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica">Dynamic Blacklisting using /sbin/shorewall<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--></table><!--mstheme--><font face="arial, Arial, Helvetica">
<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="configuration_file_basics.htm">Common configuration file features</a><!--mstheme--></font><!--msthemelist--><table border="0" cellpadding="0" cellspacing="0" width="100%">
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica">Comments in configuration files<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica">Line Continuation<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica">Port Numbers/Service Names<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica">Port Ranges<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica">Using Shell Variables<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica">Complementing an IP address or Subnet<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica">Shorewall Configurations (making a test configuration)<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica">Using MAC Addresses in Shorewall<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--></table><!--mstheme--><font face="arial, Arial, Helvetica">
<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="Documentation.htm">Configuration File Reference Manual</a><!--mstheme--></font><!--msthemelist--><table border="0" cellpadding="0" cellspacing="0" width="100%">
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica">
<a href="Documentation.htm#Variables">params</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><font color="#000099"><a href="Documentation.htm#Zones">zones</a></font><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><font color="#000099"><a href="Documentation.htm#Interfaces">interfaces</a></font><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><font color="#000099"><a href="Documentation.htm#Hosts">hosts</a></font><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><font color="#000099"><a href="Documentation.htm#Policy">policy</a></font><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><font color="#000099"><a href="Documentation.htm#Rules">rules</a></font><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="Documentation.htm#Common">common</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><font color="#000099"><a href="Documentation.htm#Masq">masq</a></font><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><font color="#000099"><a href="Documentation.htm#ProxyArp">proxyarp</a></font><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><font color="#000099"><a href="Documentation.htm#NAT">nat</a></font><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><font color="#000099"><a href="Documentation.htm#Tunnels">tunnels</a></font><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="traffic_shaping.htm#tcrules">tcrules</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><font color="#000099"><a href="Documentation.htm#Conf">shorewall.conf</a></font><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="Documentation.htm#modules">modules</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="Documentation.htm#TOS">tos</a> <!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="Documentation.htm#Blacklist">blacklist</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="Documentation.htm#rfc1918">rfc1918</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="Documentation.htm#Routestopped">routestopped</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--></table><!--mstheme--><font face="arial, Arial, Helvetica">
<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="dhcp.htm">DHCP</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><font color="#000099"><a href="shorewall_extension_scripts.htm">Extension Scripts</a></font>
(How to extend Shorewall without modifying Shorewall code)<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="fallback.htm">Fallback/Uninstall</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="shorewall_firewall_structure.htm">Firewall Structure</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><font color="#000099"><a href="kernel.htm">Kernel Configuration</a></font><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="myfiles.htm">My
Configuration Files</a> (How I personally use Shorewall)<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="ports.htm">Port Information</a><!--mstheme--></font><!--msthemelist--><table border="0" cellpadding="0" cellspacing="0" width="100%">
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica">Which applications use which ports<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica">Ports used by Trojans<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--></table><!--mstheme--><font face="arial, Arial, Helvetica">
<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="ProxyARP.htm">Proxy ARP</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="samba.htm">Samba</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><font color="#000099"><a href="starting_and_stopping_shorewall.htm">Starting/stopping the Firewall</a></font><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><font color="#000099"><a href="NAT.htm">Static NAT</a></font><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica">Tunnels<!--mstheme--></font><!--msthemelist--><table border="0" cellpadding="0" cellspacing="0" width="100%">
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="IPSEC.htm">IPSEC</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="IPIP.htm">GRE and IPIP</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul2.gif" width="12" height="12" hspace="15" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="PPTP.htm">PPTP</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--></table><!--mstheme--><font face="arial, Arial, Helvetica">
<!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--><tr><td valign="baseline" width="42"><img src="_themes/radial/aradbul1.gif" width="15" height="15" hspace="13" alt="bullet"></td><td valign="top" width="100%"><!--mstheme--><font face="arial, Arial, Helvetica"><a href="whitelisting_under_shorewall.htm">White List Creation</a><!--mstheme--></font><!--msthemelist--></td></tr>
<!--msthemelist--></table><!--mstheme--><font face="arial, Arial, Helvetica">
<p>If you use one of these guides and have a suggestion for improvement
<a href="mailto:webmaster@shorewall.net">please let me know</a>.</p>
<p><a href="copyright.htm"><font size="2">Copyright 2002 Thomas M. Eastep</font></a></p>
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