@jjurak Is this something you are actively looking to do?
If yes, do you use the fog client program? If yes that will be the problem. The fog client is hard coded to use port 80. I’ve been asking for a few years to decouple the fog client communication port from the management ui. But there has been other issues that have taken priority.
If you are interested in doing this I can probably give you a few areas to look.