License and credits

License

Openswan is a free software (also known as open source) implementation of IPsec for the Linux operating system. It is a fork (and continuation) of FreeS/WAN.
It is licensed under the GNU GPL version 2, see the LICENSE file in the distribution.

Credits

The following people have contributed major resources and/or significant patches to Openswan 2.×. There are many more unlisted contributors. If you feel you or your company are missing, please add yourself or contact patrickn@xelerance.com

• Michael Richardson <mcr@sandelman.ca> – KLIPS, OCF, IKEv2, testing
• Paul Wouters <paul@nohats.ca> – IKEv2, packaging, porting, support
• Antony Antony <antony@phenome.org> – IKEv2, testing
• Ken Bantoft <ken@xelerance.com> – DPD, cross compiling, integration
• Bart Trojanowski <bart@jukie.net> – OCF, KLIPS
• Herbert Xu <herbert@gondor.apana.org.au> – NETKEY / XFRM, IKEv2, NAT-T
• David McCullough <David_Mccullough@intel.com> – KLIPS, OCF
• D. Hugh Redelmeier <hugh@mimosa.com> – Bug fixer extraordinaire
• Andreas Steffen <andreas.steffen@strongsec.com> – X.509 Certificates
• Dr{Who} on Freenode – Porting NAT-T + XAUTH to Openswan 2.x
• Jacco de Leeuw <jacco2@dds.nl> – Fixes for MS Interop
• Mathieu Lafon <mlafon@arkoon.net> – NAT-T Support
• Nate Carlson – Force NAT-T framework, KLIPS for 2.6, etc…
• Stephen Bevan <stephen@dino.dnsalias.com> – RFC2409 port selectors
• Tuomo Soini <tis@foobar.fi> – NETKEY, KLIPS, _updown scripts and more
• Matthew Galgoci <mgalgoci@redhat.com>
• Miloslav Trmac <mitr@redhat.com>
• Avesh Agarwal <avagarwa@redhat.com>, USE_LIBNSS, SElinux
• Hiren Joshi Cyberoam [www.cyberoam.com] – Various fixes
• Shingo Yamawaki <Shingo.Yamawaki@jp.sony.com> – Various KLIPS patches
• Harald Jenny <harald@a-little-linux-box.at> – Debian support
• Rene Mayrhofer <rene@mayrhofer.eu.org> – Debian support
• Hugh Daniel <hugh@toad.com> – Testing

Openswan is a fork of the FreeS/WAN 2.04 codebase. Please see the doc/CREDITS.freeswan file from FreeS/WAN for details on original work.

Contributions

The following organizations contributed to Openswan:

• Xelerance (http://www.xelerance.com) has sponsored the continued development of Openswan from version 1.0 to version 2.6.36
• RedHat (http://www.redhat.com/) sponsored the development of IKEv2, USE_LIBNSS and various fixes related to NETKEY.
• Secure Computing / Snapgear contributed OCF integration, DYNDNS support and many other KLIPS and userland related fixes.
• IXIA Communications (http://www.ixiacom.com/) sponsored the cryptographic refit in pluto, which permitted Aggressive mode to be incorporated safely.
• Sony Japan contributed many fixes to KLIPS, and sponsored IPsec/L2TP development
• Packt Publishing (http://www.packtpub.com/) contributed 5% of book sales of the Openswan book
• Siemens Germany sponsored IPsec/L2TP development
• Emagister sponsored IPsec/L2TP development
• Astaro (http://www.astaro.de/) contributed patches and hardware
• HP (http://www.hp.com/) donated hardware
• Cyberoam (http://www.cyberoam.com/) contributed various patches