// REFERENCE
Port 2181 (ZooKeeper)
Protocol: TCP
Service: ZooKeeper
High risk
Apache ZooKeeper: coordination for distributed systems (Kafka, Hadoop). Unauthenticated by default: exposed it leaks cluster configuration. Keep it on an internal network.
Related tools
Work with this in:
Related
1433
Port 1433 (MS SQL Server) 1434
Port 1434 (MS SQL Monitor) 1521
Port 1521 (Oracle DB) 3306
Port 3306 (MySQL / MariaDB) 5432
Port 5432 (PostgreSQL) 5601
Port 5601 (Kibana)
Port 1433 (MS SQL Server) 1434
Port 1434 (MS SQL Monitor) 1521
Port 1521 (Oracle DB) 3306
Port 3306 (MySQL / MariaDB) 5432
Port 5432 (PostgreSQL) 5601
Port 5601 (Kibana)
Assignments per the IANA port registry. Educational content.