Tayna
the only port that I open is the default port 32768. all the rest i leave alone. To this day i have not a clue why the others need to be open. also you need to open the Internal IP Address of the computer your hosting it on. Example 192.168.1.10 or 11 or so on. To find computer IP open your cmd type in ipcofig hit enter you are looking for yur IPv4 address.
If your running more than on instance of the game on a couple of computers you will need to change those ports in the game config in game folder those computers to like 32769 or 70 or 71 and so on and also in your router
An enumerating session is a port and computer ip issue 99% of the time. The other is a Fire Wall
Hope this Helps
THOR