The following ports need to be forwarded for Counter-Strike Server:
Counter-Strike Server - PC
- TCP: 27015
- UDP: 27015
Setting Up a Port Forward for Counter-Strike Server

You may need to forward ports in your router when you use Counter-Strike Server. Forwarding ports is used to allow incoming connection requests from the internet to Counter-Strike Server.
Routers are not designed to allow incoming network requests. By forwarding ports you can work around this limitation.
Before You Forward a Port
Before you can forward a port you need to know the following things:
- Your router's IP address.
- Your computer's IP address.
- The TCP and UDP ports that need to be forwarded.
Locate Your Router's IP Address
The easiest way to locate your router's IP address is to run our free Router Detector utility. It's a part of the Network Utilities suite of tools and it's completely free to use.
If you do not want to run the software, you can follow our Find Your Router IP Address guide.
How To Forward Ports for Counter-Strike Server
The easiest way to forward your ports is to use our Network Utilities software. Since Network Utilities allows you to both forward and un-forward ports easily you can keep your network security maximized, and then forward ports only when you need them.
Alternatively you can do it by hand. The step-by-step process for forwarding a port is:
- You can start by logging in to your router.
- Locate your routers port forwarding section.
- 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 Server in the correct boxes in your router.
Some routers need to be rebooted in order for the changes to be saved.
You can choose your router from our list to see exactly how to forward ports for Counter-Strike Server:
List of Routers - Customized for Counter-Strike Server
That is the process required to forward ports in your router for Counter-Strike Server.