there was a missing line in my firewall script!! iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE (it was pretty obviuos - but not for me!!!) thanks to everyone!!!, specially Jean Christophe, who understand some spanish!!! Federico Lazcano - Soporte Técnico flazcano@hardtec.com.ar Hardtec S.R.L. Dorrego 2406 - Rosario TE 0341-4855556