Help please with connection from minimserver

[Budgie]

I am setting up minimwatch on linux laptop and the firewall (firewalld) is preventing communication from minimserver. If I stop the firewall all is well so I need to know what protocols and ports I must open. I must be specific as security zone is otherwise public.
I am sure I have asked before but cannot find previous message. Further advice would be appreciated.
Many thanks, Budge.