7Kas
Isolating traffic between two physical networks on Ubuntu
I have two network segments (call them A @ 192.168.1.x and B @ 192.168.2.x) plugged into two separate NICs (NIC-A and NIC-B).
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.
Devices on 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?
