27015
Steam / Source Engine
Medium RiskUDP — Gaming
Port Overview
Port Number
27015
Service Name
Steam / Source Engine
Transport Protocol
UDP
Category
Gaming
Security Risk
Medium
Port Range
Registered (1024-49151)
What is Port 27015?
Valve Source Engine and Steam game servers. Used by Counter-Strike, Team Fortress 2, Garry's Mod, and other Source engine multiplayer games.
UDP
Gaming
Commonly Used
Security Considerations
Port 27015 (Steam / Source Engine) is classified as medium risk. While this service is commonly exposed, consider using encrypted alternatives where available.
Recommendation: Keep the service updated. Monitor logs for unusual activity.