I have two network segments (call them
A @ 192.168.1.x and
B @ 192.168.2.x) plugged into two separate NICs (
The OS on the physical machine is standard stock Ubuntu, with nothing configured to do any bridging on routing. So it can "see" both networks, but the two networks don't have a way to talk to each other.
Network-B don't have a default gateway assigned.
Network B has no internet access, and I want to make sure that it stays segregated.
Is this sufficient to consider this solution fairly secure? Or should we consider implementing something on the OS to actually firewall these two networks?