Advanced Micro Devices Inc (AMD)

[CombJelly]

sgolds, do you have an old machine that isn't being used any more? It is hard to beat a Linux box at this sort of task.

Here is one that is floppy based.
http://leaf-project.org/index.php?module=pagemaster&PAGE_user_op=view_page&PAGE_id=4&MMN....

Here is another.
http://freescobox.justmyhost.com/

Dunno if those two handle VPN. It's been a long time sinc I used the 2.0 kernel, I don't remember if it can use IPSec. But this one does. It costs, though.
http://www.coyotelinux.com/

Here is one that runs off a CD. It does support IPSec and VPNs.
http://www.devil-linux.org/home/index.php