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TCP 27017

ProtocolTCP
Port27017
LabelsMongoDB daemon process (mongod) and routing service (mongos)

Synopsis

  • MongoDB database server (mongod) listens on TCP port 27017 by default.
  • The MongoDB sharding router (mongos) also defaults to TCP 27017 for client connections.
  • Managed MongoDB services such as MongoDB Atlas expose cluster nodes on port 27017.
  • AWS DocumentDB (with MongoDB compatibility) accepts client connections on TCP 27017.
  • Percona Server for MongoDB and similar MongoDB-compatible builds use 27017 as their default service port.
  • This port is frequently targeted: attackers mass-scan for exposed MongoDB services on 27017 and have conducted data-wipe/ransom campaigns against instances lacking authentication or with weak configurations.

Observed activity

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