<HTML ><HEAD ><TITLE >Server: Build the kernel </TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="VPN HOWTO" HREF="index.html"><LINK REL="UP" TITLE="Implementation" HREF="implemenetation.html"><LINK REL="PREVIOUS" TITLE="Gather the tools " HREF="x375.html"><LINK REL="NEXT" TITLE="Server: Configure Networking" HREF="x425.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" >VPN HOWTO</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="x375.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Chapter 5. Implementation</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="x425.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="sect1" ><H1 CLASS="sect1" ><A NAME="AEN397">5.3. Server: Build the kernel</H1 ><P > To start, you probably need to rebuild your kernel for the server. You need to make sure that the following kernel options are turned on in addition to basic networking and everything else that you might need. If you've never built your own kernel before, read the <A HREF="/HOWTO/Kernel-HOWTO.html" TARGET="_top" >Kernel HOWTO</A >.</P ><P > For 2.0 kernels: <P ></P ><UL ><LI ><P > CONFIG_FIREWALL </P ></LI ><LI ><P > CONFIG_IP_FORWARD </P ></LI ><LI ><P > CONFIG_IP_FIREWALL </P ></LI ><LI ><P > CONFIG_IP_ROUTER </P ></LI ><LI ><P > CONFIG_PPP </P ></LI ></UL > </P ><P > For 2.2 kernels: <P ></P ><UL ><LI ><P > CONFIG_FIREWALL </P ></LI ><LI ><P > CONFIG_IP_ADVANCED_ROUTER </P ></LI ><LI ><P > CONFIG_IP_FIREWALL </P ></LI ><LI ><P > CONFIG_IP_ROUTER </P ></LI ><LI ><P > CONFIG_PPP </P ></LI ></UL > </P ></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="x375.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="x425.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Gather the tools</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="implemenetation.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Server: Configure Networking</TD ></TR ></TABLE ></DIV ></BODY ></HTML >