TCP 27019
Synopsis
- MongoDB uses TCP port 27019 for its Config Server process (mongod started with --configsvr) in sharded clusters; mongos and shard servers connect to these config servers on 27019 in many self-hosted deployments.
- Real-world example: standard MongoDB sharded clusters (on-prem or in cloud VMs) open TCP 27019 between the three config server nodes and the mongos routers.
- Valve’s Steam platform uses TCP ports 27014–27050 for client services and content delivery; TCP 27019 falls within this range and may be used by the Steam client or Steamworks-enabled games for downloads/updates.
- Security note: Because 27019 is a MongoDB-related port, attackers often scan 27017–27019 for exposed databases and have executed ransomware/wiping attacks against unsecured MongoDB instances.
Observed activity
Last 30 days
Detailed chart