Routing between two Nics Internally
Hello another newbie to iptables here.
I have a RH9 router (2 NICs) set up internally with one NIC (one subnet) regarded as unsafe.
I do not wish to use NAT if i can help it, or maybe i do?
I would like to have the safe side "eth0" able to access the other subnet with basically no rules at all. For the unsafe eth1 subnet i would like to lock it down to only accept, say, ftp file transfers from a specific PC.
I have -P set to drop for FORWARD, INPUT, OUTPUT with a ICMP chain in forward that will let be open pinging between the two pc'c on either side but i only want traffic to basically go one way.
I have RTFM but cannot find anything that talks about routing internally.
Thanks in advance, and hope this makes sense to someone.