not able to ping beyond the firewall
This is how my setup looks:
PC -----> Linux------>hub->firewall
The PC is connected to the Linux box using a crossover cable. The Linux box has 2 ethernet interfaces. For the application to run on Linux, it is necessary that both the NICs have the same MAC address. Both the NICs have the same IP Address. I am running a Linux 2.4.18 customized kernel, with iptables and divert sockets.
Now, from my PC I am able to ping to machines with the same subnet address. However, I am not able to ping machines beyond the firewall. When I did a tcpdump on eth0, I see the requests going out, but I do not see the replies.
I am able to ping beyond the firewall when I originate the ping from the Linux box.
I would appreciate any help.