I am trying to get my two WAN ethernet connections into one box to work. > Eth2 is cable, eth1 is T1 and eth0 is office LAN. Eth2 works just fine. > connections on eth1 dont seem to go anywhere. > > I thought it was the routing based on route -n info. > > I am also using iptable to preroute and postroute. What exactly does not work? Connecting to what destination IP? Your default route is pointing out eth2. So any traffic to a non-directly connected network will go out eth2. (without some additional static routes) What are you trying to accomplish?