<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="Content-Language" content="en-us"> <meta http-equiv="Content-Type" content="text/html; charset=windows-1252"> <meta name="GENERATOR" content="Microsoft FrontPage 5.0"> <meta name="ProgId" content="FrontPage.Editor.Document"> <title>Shorewall Prerequisites</title> </head> <body> <table border="0" cellpadding="0" cellspacing="0" style="border-collapse: collapse;" bordercolor="#111111" width="100%" id="AutoNumber1" bgcolor="#400169" height="90"> <tbody> <tr> <td width="100%"> <h1 align="center"><font color="#ffffff">Shorewall Requirements</font></h1> </td> </tr> </tbody> </table> <ul> <li>A kernel that supports netfilter. I've tested with 2.4.2 - 2.4.20-pre6. <a href="kernel.htm"> Check here for kernel configuration information.</a> If you are looking for a firewall for use with 2.2 kernels, <a href="http://www.shorewall.net/seawall"> see the Seattle Firewall site</a> .</li> <li>iptables 1.2 or later but beware version 1.2.3 -- see the <a href="errata.htm">Errata</a>. <font color="#ff0000"><b>WARNING: </b></font>The buggy iptables version 1.2.3 is included in RedHat 7.2 and you should upgrade to iptables 1.2.4 prior to installing Shorewall. Version 1.2.4 is available <a href="http://www.redhat.com/support/errata/RHSA-2001-144.html">from RedHat</a> and in the <a href="errata.htm">Shorewall Errata</a>. If you are going to be running kernel 2.4.18 or later, NO currently-available RedHat iptables RPM will work -- again, see the <a href="errata.htm">Shorewall Errata</a>. </li> <li>Some features require iproute ("ip" utility). The iproute package is included with most distributions but may not be installed by default. The official download site is <a href="ftp://ftp.inr.ac.ru/ip-routing" target="_blank"> <font face="Century Gothic, Arial, Helvetica">f</font>tp://ftp.inr.ac.ru/ip-routing</a>. </li> <li>A Bourne shell or derivative such as bash or ash. Must have correct support for variable expansion formats ${<i>variable</i>%<i>pattern</i> }, ${<i>variable</i>%%<i>pattern</i>}, ${<i>variable</i>#<i>pattern</i> } and ${<i>variable</i>##<i>pattern</i>}.</li> <li>The firewall monitoring display is greatly improved if you have awk (gawk) installed.</li> </ul> <p align="left"><font size="2">Last updated 9/19/2002 - <a href="support.htm">Tom Eastep</a></font></p> <p align="left"><font face="Trebuchet MS"><a href="copyright.htm"> <font size="2">Copyright</font> � <font size="2">2001, 2002 Thomas M. Eastep.</font></a></font></p> <br> </body> </html>