A DB port is the port number used by the database engine to listen for client connections to the cluster's endpoint. When creating a DB cluster, a default port number is assigned for each specific database engine. Applications that use default ports are more prone to be attacked. Using a default port can allow attackers to learn more information about the application and may lead to further exploitation. It was detected that RDS DB cluster {AwsRdsDbCluster} is using a default port - {AwsRdsDbCluster.Port}. It is advised to use non-default ports in order to protect the DB cluster from unauthorized access.