Game server help

I am trying to set up a Trackmania Nations game server, but it is not working. I have the game set up as a Trusted Application and I’m not behind a NAT and still people are not able to join my server. If I disable the Comodo firewall then people have no problems joining my game. I’m using Windows Vista x64 with the latest firewall version 4.1.150349.920

You need to edit Global Rules to open a port for incoming traffic.

Read the following tutorial I made. Substitute the port numbers and protocol for your situation.

To open the port TCP 1723 for example

First step is to determine the MAC or Physical address of you network connector. Go to Start → Run → cmd → enter → a black box will show up and enter the following → ipconfig /all (notice the space before /all) → enter → now look up the Physical address and write it down.

Notice that Physical address = MAC address

Firewall → Advanced → Network Security policy → Global Rules → Add → fill in the following:
Action: Allow
Protocol: TCP
Direction: In
Description: Incoming Port

Source address: Any
Destination Address: Choose MAC address and fill in the found MAC/Physical address
Source Port: Any
Destination Port: 1723

Then push Apply → Now make sure that the new rule is somewhere above the basic block rule(s) as the bottom (the block rules have red icons); you can drag and drop the rules → Ok.