L4D2 ports to be opened

[mattM_-]

I like to host local servers for L4D2 as I feel I have a good enough internet connection to do so, but lately people haven't been able to connect. I think some ports needed to be opened, but I don't know which to open. It's a listen server, not a dedicated so would 27015 still be the correct port?

 

[Typhus]

These are what I use for tf2, might be relevant I guess

http://portforward.com/english/applications/port_forwarding/Left_4_Dead_2/Left_4_Dead_2index.htm

^should have all the ports you need listed

 

[NixJedi]

You also need to open port 27025

 

[Passerby]

27015, to 27025 are the default ports used for all source games and even goldsrc games

 

[Stealth]

port foward?