Hi,

Setting up a VPN in LInux is not always easy, as I discovered for myself.
However, you'd be amazed what Google keeps finding.
I do think this a config that only trained linux-dudes would know by themselves.
So , again, I'm posting the next url as ( I think) a really valuable contribution
for the Linux - lovers, and there a lot of them here, and still growing....

So , read, execute and learn ...

http://www.tldp.org/HOWTO/VPN-HOWTO/

Greetz,