How to add a rule so that two interfaces are communicated

[Ri]

I have an interface named Camera gateway 192.100.100.1 mask 255.255.255.0
and an interface named Administration Gateway 192.100.200.245
mask 255.255.255.0
I would like the pc to connect on the Administration address range can see the cameras

[KOM]

@ri Add a rule on the Admin Gateway interface to allow it.

Firewalling Fundamentals

Troubleshooting Firewall Rules