Computer Hope

Long shot from a newbie.
I have played BF2/AIX almost since it's inception but due to it's age and people moving on there are only a few servers left. I would like to set up a server at home and wonder if anyone here has any knowledge of doing it and can offer some advice... I have made a couple of attempts but not successful in getting it to broadcast to the 'net.
BF2 and BF2Hub is installed on a spare machine running Centos 7, (Windows Server is way too expensive).
Thanks for reading.

Brew