How to open GamePorts ?
To open the ports you need to access your Router as follows.
-> Go to the "Command Prompt".
-> Write the following code: Ipconfig
-> IP following appears for example:

192.168.2.4 | ---> | Private IP Address of the PC |
255.255.255.0 | ---> | Mask subred |
192.168.2.1 | ---> | IP Address Access Router |
TACTICAL OPS
Gameports
7777 | UDP | Default Gameplay | Enable |
27900 | UDP | Server Query | Enable |
7778 | UDP | Server Query | Enable |
8888 | TCP | Web Admin | Enable |
7779 | UDP | Dynamically allocated for each udplink | Optional |
7780 | UDP | Dynamically allocated for each udplink | Optional |
7781 | UDP | Dynamically allocated for each udplink | Optional |
8777 | UDP | LAN Broadcast | Optional |
DMZ | Open with private IP - ex: [ 192.168.2.X ] | Enable | |
FIREWALL | Disable for permited server in global list | Disable |