Setting up 2-NIC forward for Snort
I installed CentOS 5.7 and Snort on a machine with 2 NICS. I'm going to set up the network like this:
At the moment, I have set up the 2 NICs like so:
eth0 = 192.168.1.181 (Internal)
eth1 = 192.168.110.2 (External)
Before I take down my network to put this in place, I need to make sure it is functioning correctly. I have another machine connected directly to eth1 and trying to test traffic.
I've been trying to find some CLEAR documentation on setting up a forward so traffic passes through both NICs without issue. I've tried following iptables tutorials, custom scripts, etc and it's just not working. Can anyone help me with this?