Originally Posted by Paul
And as gateway for eth1 sould I set the IP of eth0? (i will use this mashine as gateway LAN - Internet)
Hm, I think you have to do that with iptables rules. Maybe you should google for something like "Debian router howto" or so...
If you only need that box as a router, then I'd recommend that you install IPCop on it. http://www.ipcop.org/
Easy to install, and very secure.