Hi. I would like to ask you which ports are suppose to be open. Put a lot of details in this procedure because it is not me who will open the ports but a technician. Thank you very much.

Plus, now that some of ports are open, I can log in but when I have to pick a channel, nothing happened... What I am doing wrong ?

My Cabal is updated, everything looks fine.. But I can't enter into the world. Please help me. Tyvm.