strongSwan

h1. Documentation about IPsec

h2. Standards

* A hopefully up-to-date list of [[IpsecStandards|IPsec Standards]].

h2.  Wikipedia

* on "IKE":http://en.wikipedia.org/wiki/Internet_Key_Exchange (IKEv1 and IKEv2)

* on "IPsec":http://en.wikipedia.org/wiki/IPsec

h2. Links

* Steve Friedl's "Illustrated Guide to IPsec":http://www.unixwiz.net/techtips/iguide-ipsec.html

* HSR course "Internet Security": "Virtual Private Networks":http://security.hsr.ch/lectures/IntSec1-VPN.pdf

* HSR course "Internet Security": "Internet Key Exchange":http://security.hsr.ch/lectures/IntSec1-IKE.pdf

* This site has a lot of links about the topic: http://www.estoile.com/links/ipsec.htm

* "Leichter Tunneln - Einfacher Tunnelbau dank IKEv2":http://www.heise.de/security/Einfacher-VPN-Tunnelbau-dank-IKEv2--/artikel/102744/0 - Heise Security (German)

h2. Books

A solid unterstanding of the IKE protocol is particularly useful when debugging IPSec configurations. The following books might help you getting a good grasp of the subject.

* Kaufman, Charlie, Radia Perlman and Mike Speciner. _Network Security - PRIVATE Communication in a PUBLIC World (2nd Edition)_, Prentice Hall International, 2002, ISBN 0-13-046019-2 (hardcover).

* Doraswamy, Naganand and Dan Harkins. _IPSec: The New Security Standard for the Internet, Intranets, and Virtual Private Networks (2nd Edition)_, Prentice Hall PTR, 2003, ISBN 0-13-011898-2 (hardcover) / 0-13-046189-X (paperback).