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-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
-<HTML>
-<HEAD>
-<TITLE>Introduction to FreeS/WAN</TITLE>
-<META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=iso-8859-1">
-<STYLE TYPE="text/css"><!--
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-</HEAD>
-<BODY>
-<A HREF="toc.html">Contents</A>
-<A HREF="rfc.html">Previous</A>
-<A HREF="umltesting.html">Next</A>
-<HR>
-<H1><A name="roadmap">Distribution Roadmap: What's Where in Linux
- FreeS/WAN</A></H1>
-<P> This file is a guide to the locations of files within the FreeS/WAN
- distribution. Everything described here should be on your system once
- you download, gunzip, and untar the distribution.</P>
-<P>This distribution contains two major subsystems</P>
-<DL>
-<DT><A href="#klips.roadmap">KLIPS</A></DT>
-<DD>the kernel code</DD>
-<DT><A href="#pluto.roadmap">Pluto</A></DT>
-<DD>the user-level key-management daemon</DD>
-</DL>
-<P>plus assorted odds and ends.</P>
-<H2><A name="top">Top directory</A></H2>
-<P>The top directory has essential information in text files:</P>
-<DL>
-<DT>README</DT>
-<DD>introduction to the software</DD>
-<DT>INSTALL</DT>
-<DD>short experts-only installation procedures. More detalied procedures
- are in<A href="install.html"> installation</A> and<A href="config.html">
- configuration</A> HTML documents.</DD>
-<DT>BUGS</DT>
-<DD>major known bugs in the current release.</DD>
-<DT>CHANGES</DT>
-<DD>changes from previous releases</DD>
-<DT>CREDITS</DT>
-<DD>acknowledgement of contributors</DD>
-<DT>COPYING</DT>
-<DD>licensing and distribution information</DD>
-</DL>
-<H2><A name="doc">Documentation</A></H2>
-<P> The doc directory contains the bulk of the documentation, most of it
- in HTML format. See the<A href="index.html"> index file</A> for
- details.</P>
-<H2><A name="klips.roadmap">KLIPS: kernel IP security</A></H2>
-<P><A href="glossary.html#KLIPS"> KLIPS</A> is<STRONG> K</STRONG>erne<STRONG>
-L</STRONG><STRONG> IP</STRONG><STRONG> S</STRONG>ecurity. It lives in
- the klips directory, of course.</P>
-<DL>
-<DT>klips/doc</DT>
-<DD>documentation</DD>
-<DT>klips/patches</DT>
-<DD>patches for existing kernel files</DD>
-<DT>klips/test</DT>
-<DD>test stuff</DD>
-<DT>klips/utils</DT>
-<DD>low-level user utilities</DD>
-<DT>klips/net/ipsec</DT>
-<DD>actual klips kernel files</DD>
-<DT>klips/src</DT>
-<DD>symbolic link to klips/net/ipsec
-<P>The &quot;make insert&quot; step of installation installs the patches and makes
- a symbolic link from the kernel tree to klips/net/ipsec. The odd name
- of klips/net/ipsec is dictated by some annoying limitations of the
- scripts which build the Linux kernel. The symbolic-link business is a
- bit messy, but all the alternatives are worse.</P>
-<P></P>
-</DD>
-<DT>klips/utils</DT>
-<DD>Utility programs:
-<P></P>
-<DL>
-<DT>eroute</DT>
-<DD>manipulate IPsec extended routing tables</DD>
-<DT>klipsdebug</DT>
-<DD>set Klips (kernel IPsec support) debug features and level</DD>
-<DT>spi</DT>
-<DD>manage IPsec Security Associations</DD>
-<DT>spigrp</DT>
-<DD>group/ungroup IPsec Security Associations</DD>
-<DT>tncfg</DT>
-<DD>associate IPsec virtual interface with real interface</DD>
-</DL>
-<P>These are all normally invoked by ipsec(8) with commands such as</P>
-<PRE> ipsec tncfg <VAR>arguments</VAR></PRE>
- There are section 8 man pages for all of these; the names have &quot;ipsec_&quot;
- as a prefix, so your man command should be something like:
-<PRE> man 8 ipsec_tncfg</PRE>
-</DD>
-</DL>
-<H2><A name="pluto.roadmap">Pluto key and connection management daemon</A>
-</H2>
-<P><A href="glossary.html#Pluto"> Pluto</A> is our key management and
- negotiation daemon. It lives in the pluto directory, along with its
- low-level user utility, whack.</P>
-<P> There are no subdirectories. Documentation is a man page,<A href="manpage.d/ipsec_pluto.8.html">
- pluto.8</A>. This covers whack as well.</P>
-<H2><A name="utils">Utils</A></H2>
-<P> The utils directory contains a growing collection of higher-level
- user utilities, the commands that administer and control the software.
- Most of the things that you will actually have to run yourself are in
- there.</P>
-<DL>
-<DT>ipsec</DT>
-<DD>invoke IPsec utilities
-<P>ipsec(8) is normally the only program installed in a standard
- directory, /usr/local/sbin. It is used to invoke the others, both those
- listed below and the ones in klips/utils mentioned above.</P>
-<P></P>
-</DD>
-<DT>auto</DT>
-<DD>control automatically-keyed IPsec connections</DD>
-<DT>manual</DT>
-<DD>take manually-keyed IPsec connections up and down</DD>
-<DT>barf</DT>
-<DD>generate copious debugging output</DD>
-<DT>look</DT>
-<DD>generate moderate amounts of debugging output</DD>
-</DL>
-<P> There are .8 manual pages for these. look is covered in barf.8. The
- man pages have an &quot;ipsec_&quot; prefix so your man command should be
- something like:</P>
-<PRE>
- man 8 ipsec_auto
-</PRE>
-<P> Examples are in various files with names utils/*.eg</P>
-<H2><A name="lib">Libraries</A></H2>
-<H3><A name="fswanlib">FreeS/WAN Library</A></H3>
-<P> The lib directory is the FreeS/WAN library, also steadily growing,
- used by both user-level and kernel code.
-<BR /> It includes section 3<A href="manpages.html"> man pages</A> for
- the library routines.</P>
-<H3><A name="otherlib">Imported Libraries</A></H3>
-<H4>LibDES</H4>
- The libdes library, originally from SSLeay, is used by both Klips and
- Pluto for<A href="glossary.html#3DES"> Triple DES</A> encryption.
- Single DES is not used because<A href="politics.html#desnotsecure"> it
- is insecure</A>.
-<P> Note that this library has its own license, different from the<A href="glossary.html#GPL">
- GPL</A> used for other code in FreeS/WAN.</P>
-<P> The library includes its own documentation.</P>
-<H4>GMP</H4>
- The GMP (GNU multi-precision) library is used for multi-precision
- arithmetic in Pluto's key-exchange code and public key code.
-<P> Older versions (up to 1.7) of FreeS/WAN included a copy of this
- library in the FreeS/WAN distribution.</P>
-<P> Since 1.8, we have begun to rely on the system copy of GMP.</P>
-<HR>
-<A HREF="toc.html">Contents</A>
-<A HREF="rfc.html">Previous</A>
-<A HREF="umltesting.html">Next</A>
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