<HTML ><HEAD ><TITLE >Previous knowledge and system requirements</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="Querying libiptc HOWTO" HREF="index.html"><LINK REL="PREVIOUS" TITLE="How did I obtain this knowledge?" HREF="howdidi.html"><LINK REL="NEXT" TITLE="Installing iptables + libiptc" HREF="install.html"></HEAD ><BODY CLASS="SECT1" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >Querying libiptc HOWTO</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="howdidi.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="install.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="PREVIOUS">8. Previous knowledge and system requirements</H1 ><P >You have to have some previous knowledge to follow this document:</P ><P ></P ><OL TYPE="1" ><LI ><P ><EM >Very important:</EM > You must know how to use the <EM >iptables</EM > package as a user, such as how to create or list rules and user chains. You do not need to be a firewall expert, but you should know how to use <EM >iptables</EM > fluently.</P ></LI ><LI ><P >You have to have kernel sources installed in your system, in <TT CLASS="FILENAME" >/usr/src/linux</TT > as usual.</P ><P >I am using a <EM >2.4.16</EM > kernel in a <EM >SuSE 7.1</EM > Linux environment. You need <EM >2.4.x</EM > kernel code to follow this HOWTO, preferably kernel <EM >2.4.16</EM >. For <EM >SuSE</EM > you can get the kernel sources at <A HREF="ftp://ftp.gwdg.de/pub/linux/suse/ftp.suse.com/suse/i386/update/" TARGET="_top" >ftp://ftp.gwdg.de/pub/linux/suse/ftp.suse.com/suse/i386/update</A >.</P ></LI ><LI ><P >You have to know how to compile the kernel if you have to update your kernel version. After activating the netfilter options using <B CLASS="COMMAND" >make menuconfig</B >, you must compile and install the kernel as usual.</P ></LI ><LI ><P >Reboot your new kernel using <B CLASS="COMMAND" >init 6</B >. Ensure that you backup a copy of your previous kernel in <EM >lilo</EM > in case you encounter a problem and need to retrace your steps.</P ></LI ><LI ><P >Be sure that your new <EM >2.4.x</EM > kernel is running fine. To install <EM >iptables-1.2.6</EM > you will need to patch the kernel again (and re-compile and install it), and it is better if you follow the previous two steps to ensure that your kernel is running right before applying new iptables patches.</P ></LI ></OL ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="howdidi.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="install.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >How did I obtain this knowledge?</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" > </TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Installing iptables + libiptc</TD ></TR ></TABLE ></DIV ></BODY ></HTML >