UDP 27961

ProtocolUDP
Port27961
Labels

Synopsis

  • UDP port 27961 is commonly used by id Tech 3 (Quake III Arena engine) game servers as a secondary instance port.
  • Quake III Arena’s default is UDP 27960, but when multiple servers run on one host, additional instances often listen on 27961.
  • Real-world examples include OpenArena and Urban Terror servers that frequently use 27961 for second instances.
  • Wolfenstein: Enemy Territory and Return to Castle Wolfenstein (also id Tech 3) similarly use 27961 for additional servers beyond the 27960 default.
  • ioquake3-based dedicated servers often expose their status/query service on 27961 when configured as the second instance.
  • These Quake 3–protocol servers on 27961 (like those on 27960) have been abused for UDP reflection/amplification DDoS via the getstatus query when left publicly exposed.

Observed activity

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