Any help greatly appreciated. I recently added a new subnet; xxx.xxx.4.x, we currently have 1, 2, and 3 also. The routers have been configured, everythig works fine, but I cannot add the 4.x network properly in Checkpoint FW-1 NG. I added the network, exactly as the other three are setup, I added the network to the "internal networks group", but when I go to do the topology, the new network does not show up, only the three existing. Any ideas?