TCP 9042
Synopsis
- TCP port 9042 is the default “native transport” port for Apache Cassandra’s CQL protocol.
- DataStax Enterprise (DSE) nodes listen on 9042 for CQL clients such as cqlsh and the DataStax drivers.
- ScyllaDB (a Cassandra-compatible database) uses 9042 by default for its CQL service.
- YugabyteDB listens on 9042 for its YCQL (Cassandra-compatible) API.
- Cassandra distributions/stacks like K8ssandra and Bitnami’s Apache Cassandra images expose service port 9042 for client connections.
- Elassandra (Elasticsearch on Cassandra) retains Cassandra’s 9042 CQL port for data access.
- Security: attackers commonly scan 9042 for exposed Cassandra/Scylla/Yugabyte instances with weak or disabled authentication, enabling data theft or destructive actions.
Observed activity
Last 30 days
Detailed chart