I have two routers. The main router than everything goes through and a second router that I want to route some traffic through depending on the originating IP#. The second router has filtering and the like running on it. For traffic coming from a specific IP# and hitting the main router, I want it then to be routed out through the second router. Currently I got it working for port 80, using iptables, since squid is setup transparently on the filtering router. The command I am using is this... iptables -t nat -A PREROUTING -s <machine to filter for> -p tcp --destination-port 80 -j DNAT --to-destination <filtering router>. This works, but only for like web or the like which has a transparent squid setup to take care of it. That works for right now, but what I want to accomplish is to have the main router kick packets, from specified IP#, out to the secondary router.
