Ip route

xanax · 05-06-2008, 01:34 PM

Ok i have 3 ethernet card eth0,eth2 and eth2. Eth0 is a lan card and eth1 and eth2 are cards with internet access. I managed to set routing per nat user to route them whatever i like. The question is how to set a routing rule only for the router itself to route thru table dsl2 ??
iplan - lan ip
ip1 - dsl1 ip
ip2 -dsl2 ip
I tried:
ip rule add from ip1 table dsl1

I know i can set default gateway in main table but i want everybody to go the default gw and set the router to thru different gw. Can enybody help me ??

datopdog · 05-07-2008, 07:30 AM

If the default gw is not the dsl1 then all packets will leave the machine via the interface that connects to the default gw.

To make your router go through the dsl1 you can use iptables to mark packets generated by the router then use a fwmark rule to push the traffic to dsl1

Code:

iptables -t mangle -I OUTPUT -j MARK --set-mark 2
ip ru add fwmark lookup dsl1