Hello,
For this one, I would like to clarify things that RMS is supporting these protocols as of now (SSH, HTTP/HTTPS, RDP, and VNC). But there are plans for the implementation of camera and streaming protocols with RMS in the future.
For the mentioned protocol that the camera is using let say RTSP that is used for live streaming, it is not supported. So I would suggest the use of 3rd party VPN solutions that is with the router example Zerotier and OpenVPN for this kind of network solutions.
Regards,
Jerome