On Fedora I used to be abble to configure custom ports into the Firewall by going to setup and following the required steps till I got to something like this:
Well that menu is here no more. I can only allow "trusted services" into the Firewall.
I can change them by hand editing:
And I can test them using:
netstat -tulpn | less
The thing is I really liked the old interface. Allowed me to ssh to the machine and, in my opinion was less prone to errors.
Has it been discontinued? Am I missing some module?