THIS GUIDE IS FOR LISTEN SERVERS
I am tired of all the threads about how your server is stuck on LAN and how people can’t connect. Here are the ports that you have to forward in order to allow people to join.
1200 - 1200 UDP and TCP
27005 - 27005 UDP and TCP
27015 - 27020 UDP and TCP
27039 - 27039 UDP and TCP
Even after you have forwarded these ports, friends will not be able to connect to your server through the server browser or by joining from friends list.
You have to visit THIS website and take a note of the IP address that shows up in big bold letters. Get whoever you want to join your server to type in console: connect <IP Address here>. Giving them your local IP e.g. 192.168.1.x will not work.
For example, if I wanted my friends to join my server they would type connect 188.8.131.52 in console.
I am surprised this hasn’t been done before. If it has then the old one should have been stickied.