UDP 27961
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
Last 30 days
Detailed chart