iptables & vpn support?

[aUsLanDeR]

Hey gurus,

I have a MASQ'd win32 client that is behind a linux firewall.

I'd like to be able to tunnel from the win32 client to the IPSEC vpn box on the corporate network, but am unsure of how to go about enabling this--that is, setting the iptables chains and which modules to load etc to allow for the necessary traffic.

I understand that iptables has this functionality built into it, but errr.... I'm (quite frankly) an iptables n00bie :D

Is anyone able to help a brutha out with this? :)

Thanks!