FreeS/WAN documentation

detailed table of contents for HTML documentation
HTML documentation as one big file

The following documents cover most of what you need to use FreeS/WAN:

Introduction, describing the IPSEC protocols FreeS/WAN implements, why we are building it, and what you can do with it
Installing FreeS/WAN. You can skip this if your distribution includes FreeS/WAN.
Configuration. Setting up the system once it is installed.
FreeS/WAN and firewalls
Troubleshooting
manual pages
FreeS/WAN FAQ
known BUGS in current release
important CHANGES from previous releases

Other HTML documents provide more detail or background information, or cover more specialised topics:

History and politics of cryptography
The IPSEC protocols
Compatibility Guide Linux distributions, CPU architectures, IPv6
Interoperation with other IPSEC implementations
Kernel configuration for FreeS/WAN
Mailing lists and newsgroups
Web links (a large collection)
Glossary (our largest file)
Bibliography
Distribution Roadmap: What's Where in Linux FreeS/WAN
IPSEC RFCs and related documents

For technical support and other questions, use the mailing list.