IPtables: Route outgoing traffic from internal host to only go a internet interface

predatorz · 11-21-2010, 07:32 AM

Hi,

My Ubuntu Box has 3 interfaces.
eth0 (Internal 192.168.1.0/24)
eth1 (External ISP DHCP)
eth2 (External ISP Static IP)
I need the outgoing traffic to internet for 1 of the internal pc (192.168.1.10) to only go only go through eth2.

How do i write using iptables to do the above?
Thanks.

DaRkBoDoM · 11-21-2010, 10:47 AM

It's a routing issue, not a firewall issue.

Check google for iproute2 and "source routing"

predatorz · 11-21-2010, 10:13 PM

Okay thanks.

jschiwal · 11-21-2010, 10:38 PM

Look at Section 4.1 Simple Source Routing for an example:

http://www.linuxdocs.org/HOWTOs/Adv-...g-HOWTO-4.html

An updated version of this document may have been supplied with the iproute2 package:
file:///usr/share/doc/howto/en/html/Adv-Routing-HOWTO/index.html

predatorz · 11-24-2010, 09:05 AM

Thanks for the help, i managed to get it working nicely.