Forwarding the Mikrotik port to video surveillance?

Question

Mikrotik

Good afternoon. Help solve the problem.
In the organization, physically one network, logically two. The first 10.31.*.* is a locale with the Internet, the second 192.168.*.* is video surveillance.
There was a camera with a direct ip address (192.168.1.128). Her wire was borrowed for Mikrotik, in the wan port. And already in poe the camera itself is stuck.
The Internet (from the network 10.31.*.*) was raised on Mikrotik, but how to forward the camera from it to the network?