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PC Ports

  1. PC
  2. STEAM: 

    Required Ports for Steam

    The following are ports you need to have open on your router or firewall for Steam to operate normally.

    To log into Steam and download content:

HTTP (TCP remote port 80) and HTTPS (443)

UDP remote port 27015-27050

TCP remote port 27015-27050

Steam Client

UDP remote port 27000-27100: Game traffic

UDP local port 27031-27036: Remote Play

TCP local port 27036: Remote Play

UDP remote port 4380

Dedicated or Listen Servers

TCP local port 27015 (default): SRCDS Rcon port

UDP local port 27015 (default): gameplay traffic

Steamworks P2P Networking and Steam Voice Chat

UDP remote port 3478

UDP remote port 4379

UDP remote port 4380

UDP remote ports: 27014-27030

Note: Many schools, universities, business networks and proxies block required ports for Steam operation - please consult your network administrator to ensure the required ports are open if you are using a university/business network or a proxy. 

Ports required for Steam can not be re-mapped to HTTP or reconfigured to a custom port range.

For generic Steam HTTP/HTTPS requests, your proxy should allow the following domains:

Most of the non-web traffic is usually UDP but can be TCP as well. For that, the IPs will all be from the Valve network (AS32590), and a list of those IP blocks can be found here: