Table of games and their TCP/UDP ports. Note that not all of these need to be forwarded in the server host's router config, as they will open via UPNP automatically.
| Game |
TCP Ports |
UDP Ports |
 |
CS:GO |
27015:27030, 27036:27037 |
4380, 27000:27031, 27036 |
 |
TF2 |
27014:27050 |
3478:4380, 27000:27030 |
 |
Black Mesa |
27015:27030, 27036:27037 |
4380, 27000:27031, 27036 |
 |
Left4Dead 2 |
27015:27030, 27036:27037 |
4380, 27000:27031, 27036 |
 |
Unreal Tournament |
7777, 8080, 8777, 9777, 27900 |
7777:7779, 27900 |
 |
QuakeWorld |
27500 |
27500 |
 |
Battlefield 1942 |
28900 |
14567, 14690, 23000:23009 |
 |
Battlefield 2 |
- |
16567, 29900 |
 |
Wreckfest |
27015:27030, 27036:27037 |
4380, 27000:27031, 27036, 33540 |
 |
Dirt 4 |
27015:27030, 27036:27037 |
4380, 27000:27031, 27036 |
If you do run a server locally for others to use, you will need to know your Public IP Address
