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CrossOver™ PortJump™ ExecMode™

Steam Tips

Steam ports used

Steam Client
  • UDP 27000 to 27015 inclusive (Game client traffic)
  • UDP 27015 to 27030 inclusive (Typically Matchmaking and HLTV)
  • TCP 27014 to 27050 inclusive (Steam downloads)
  • UDP 4380

 

Dedicated or Listen Servers
  • TCP 27015 (SRCDS Rcon port)

 

Steamworks P2P Networking and Steam Voice Chat
  • UDP 3478 (Outbound)
  • UDP 4379 (Outbound)
  • UDP 4380 (Outbound)

 

Additional Ports for Call of Duty: Modern Warfare 2 Multiplayer
  • UDP 1500 (outbound)
  • UDP 3005 (outbound)
  • UDP 3101 (outbound)
  • UDP 28960

Tips for Steam
by Jack Phinney on 2011-03-29 15:54:39
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