I’ve been working on this for over a week. I don’t think its working the way it should.
Here’s what I’m trying to do:
I have a Windstream dsl router with wireless > 192.168.1.100
CentOS 6.8 server eth0 > 192.168.1.110 > gateway 192.168.1.111
eth1 > 192.168.1.111 > gateway
Switch > other computers and devices > gateway 192.168.1.110
I want to send all internal traffic through 192.168.1.110, all external traffic through 192.168.1.111, then back through 192.168.1.110.
I did an iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE
Outside connectivity for all other computers and devices only works if eth0
is also connected to the router, server works Iptraf shows no traffic on eth1
Hope I haven’t confused you as I have thoroughly confused myself.