MeshCamAndRouters

[MeshAPuser] Can not view ip cameras from within the mesh

One of my clients is having trouble logging into his security cameras from within the mesh. The setup is as follows:

The cameras are attached to the router and the meshbox the client is accessing the internet through is also attached to the router. I can see the cameras from my office computer. Is there a port I need to open or do I need to do some sort of host mapping to enable viewing of the cameras from within the mesh.

Category
PortMapping, ["Port forwarding with a camera"] and WebCam