Hello I am trying to build a highly available firewall. I am using ultramonkey (http://ultramonkey.sourceforge.net/) and everything works fine... but I need to do -j MASQ over -i eth0:0 and this does not work. Here is my network setup Internet<---- Cluster of Firewalls<---> DMZ eth0:0 eth1:0 | | LAN The default gateway of LAN is 192.168.2.125 (eth1:0 on both nodes of cluster, this work greats) I have a DSL connection to Internet, so I only have a valid IP address I need to do something like ipchains -A forward -i eth0:0 -j -s LAN/24 -j MASQ How can I achieve this? I am using kernel 2.2.20+freeswan 1.92 on both nodes. Thank you in advance and greetings from Seville (Spain)! -- Javier Miguel Rodríguez. (GUFO) Miembro del grupo Linux de la Facultad de Informática de Sevilla -o) http://talika.fie.us.es/linux /\\ Linux Registered User #145051. _\_V