The incoming ports that need to be forwarded for Counter-Strike: Global Offensive Server are:
Counter-Strike: Global Offensive Server - PC
- TCP: 27015
- UDP: 27015, 27020
Forward Ports for Counter-Strike: Global Offensive Server

You might need to forward some ports in your router when you use Counter-Strike: Global Offensive Server. Forwarding ports is used to allow incoming connection requests from the internet to Counter-Strike: Global Offensive Server.
Routers generally do not allow incoming connection requests from the internet. Forwarding ports can work around this limitation.
Before Forwarding a Port
Before you can forward a port you need to know the following things:
- The internal IP address of your router.
- The internal IP address of your computer.
- A list of TCP and UDP ports that need to be forwarded.
Find the IP Address of Your Router
To find your router's IP address the easy way you can use our free Router Detector software. It is part of our Network Utilities suite of tools and is free for you to use it.
Otherwise, you can follow our guide Find Your Router IP Address.
How To Forward Ports for Counter-Strike: Global Offensive Server
You can use our Network Utilities software to automatically forward ports for you. Our Network Utilities software allows you to add port forwards and also remove them when you no longer need them to maximize your network security.
Another option is to go through the process of forwarding ports one step at a time. The process for forwarding a port is:
- Start by logging in to your router.
- Locate the section in your router that deals with port forwarding.
- Put the IP address of your computer in the proper box in your router.
- Put the TCP and UDP ports that you are forwarding for Counter-Strike: Global Offensive Server in the correct boxes in your router.
You probably will need to reboot your router for the changes to take effect.
You can choose your router from our list to see exactly how to forward ports for Counter-Strike: Global Offensive Server:
List of Routers - Customized for Counter-Strike: Global Offensive Server
Those are the steps to take in order to forward ports in your router for Counter-Strike: Global Offensive Server.