I have a linux network which have 4 computers all installed in Linux: a front firewall, a web server, another firewall and database server. The second firewall is for protecting db server and also acts as a gateway between the 2 subnetwork: 192.168.2.0 is made up of "front firewall", "web server", "second firewall", 192.168.3.0 is made up of "second firewall" and "db server". All these are configured by my college and work very well.
My taks is to add another web server to this network, now my problem is the new server can see all computers on 192.168.2.0 but not 192.168.3.0, I use "/sbin/route -n" to check the routing table and found the gateway is not there. Since I am doing the configuration remotely and the new web server did not install X, I supposed I may need to directly edit some configuration files, how to do that?
The machine is linux redhat 7.3.