I do not know all the possibilities of ROS.
Also I wanted to know if it is possible to achieve this secure network.
The link can be cut by a boat , so there has 2 ways to get images to monitor (on the right of drawing)
the first by a direct WiFi link,
the second by WiFi and fiber optic
If it is possible and a certified consultant knows how, he can contact me.
After reading the article in the link below I set up a PEAP MSCHAPv2 wireless network. Its not a mikrotik specific article but I’m not sure the answer to your question needs to be. Its more a general recap on what you need (like a radius server) and which methods can create an encypted exchange of passwords… and other things required to be secure. Broken out by what level of security you need.