Which ports do I need to forward in order to enable in-game voice chat? (steam version) Various guides mention several port ranges, both high and low, and I am confused as to what I am actually supposed to forward. Does the game check the lowest port first, so that I will have to only forward one port, or do I have to literally forward every port it [i]may[/i] want to use? And before someone comments about that: No, I will not open my NAT. UPnP is a security hazard.