I'm trying to set up a SUSE router/firewall. I have 3 nics installed in the Linux box: 2 for internal subnets, 1 for external connection.
2 internal networks are 10.71.42.0 sm 255.255.255.128 and 10.71.42.128 sm 255.255.255.224
I enable forwarding linux box and it works fine. My 2 internal machines can ping each other.
When I turn on the firewall, I lose ping between the internal machines. I can ping the local machine, the local gw, and the gw for the other subnet, but get no response from the host on the other subnet.
Turning off the firewall doesn't seem to fix the problem, I have to reboot the router machine.
What am I overlooking?