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Source Engine Server
Port 27010 is commonly associated with dedicated game servers running on the Source Engine, developed by Valve. This port is utilized for server communication, such as game status queries and managing multiple server instances within multiplayer online gaming environments. While it is primarily known in unofficial contexts, it remains a critical component supporting the gameplay and server management of titles like Counter-Strike, Team Fortress, and other Source-based games..
Port 27010 is widely used by dedicated servers powered by Valve's Source Engine, which supports popular multiplayer games. This port often operates alongside other common ports (such as 27015 or 27005) to handle server communications, including client-server synchronization, server queries, and management of game instances. Though primarily unofficial, many Source-based servers utilize it as an alternative listen or query port.
Technically, it facilitates communication over both TCP and UDP — depending on the server configurations and game requirements — although in many cases, UDP is favored for real-time game data exchange due to its low latency. The port enables clients to retrieve server details like active player lists, game modes running, and match status.
Game server administrators can customize their setups, which sometimes includes reassigning or forwarding this port. Consequently, 27010 plays a significant role in maintaining responsive, low-latency gameplay within Source Engine titles, essential for ensuring a stable multiplayer experience.