FreeSwan to Cisco config's....
Below are some links to config's I have used to connect Cisco Routers and Cisco PIX's to FreeSwan.
The Cisco PIX and Cisco Routers will require a 3DES software upgrade. The minimum software for the PIX is 5.1(4) and for the Cisco IOS is 12.07T.
If you have any questions you can email me at greg@diverdown.cc. or the FreeSwan User mailing list at users@lists.freeswan.org
Cisco Router(2611) to FreeSwan 1.91
http://www.johnleach.co.uk/documents/freeswan-pix/freeswan-pix.html