Neptune DB clusters must have IAM database authentication enabled to centralize credential management and enable IAM-based access control and auditing. This reduces reliance on static database passwords that can be leaked or become stale. In AWS CloudFormation, the AWS::Neptune::DBCluster resource must include the IamAuthEnabled property set to true. Resources that omit this property or set IamAuthEnabled to false will be flagged.
Secure configuration example:
MyNeptuneCluster:Type:AWS::Neptune::DBClusterProperties:DBClusterIdentifier:my-neptune-clusterIamAuthEnabled:true# other required properties...