When you say work firewall, I assume you mean your hardware/gateway, correct?
I use these on my gateway and then point those to the machine that is hosting the server, which also has ports open at the Windows 10 level firewall as well.
Code:
TCP/UDP: 9000
TCP/UDP: 7000-7500
TCP/UDP: 7778-7779
TCP/UDP: 5998-5999
I have MYSQL port 3306 in there too but that's only because I can maintain the DB remotely. Not necessary unless you're using that function.
Hope that helps