[Steam All] title=All Services description=Client, dedicated servers, P2P and voice chat ports=27000:27015/udp|27015:27030/udp|27014:27050/tcp|4380/udp|27015/tcp|3478/udp|4379/udp warning=Client, Dedicated Servers, P2P and Voice Chat categories=Games;Steam; reference=[https://support.steampowered.com/kb_article.php?ref=8571-GLVN-8711] [Steam Client] title=Client description=Game client traffic, typically Matchmaking and HLTV and Steam downloads ports=27000:27015/udp|27015:27030/udp|27014:27050/tcp|4380/udp categories=Games;Steam; reference=[https://support.steampowered.com/kb_article.php?ref=8571-GLVN-8711] [Steam Dedicated Servers] title=Dedicated Servers description=SRCDS Rcon port ports=27015/tcp categories=Games;Steam; reference=[https://support.steampowered.com/kb_article.php?ref=8571-GLVN-8711] [Steamworks P2P Networking and Steam Voice Chat] title=P2P and Voice Chat description=Steamworks P2P Networking and Steam Voice Chat ports=3478/udp|4379/udp|4380/udp categories=Games;Steam; reference=[https://support.steampowered.com/kb_article.php?ref=8571-GLVN-8711] [Additional Ports for Call of Duty: Modern Warfare 2 Multiplayer] title=Call of Duty description=Additional Ports for Call of Duty: Modern Warfare 2 Multiplayer ports=1500/udp|3005/udp|3101/udp|28960/udp categories=Games;Steam; reference=[https://support.steampowered.com/kb_article.php?ref=8571-GLVN-8711]