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Redshift cluster is not publicly accessible

redshift
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Description

Confirm Redshift clusters are not publicly available.

Rationale

Publicly available Redshift clusters have a public IP address, which gives any machine the opportunity to attempt to connect to your clusters. Malicious activity, such as SQL injections or distributed denial-of-service (DDoS) attacks, can occur if a connection is established.

Remediation

From the console

Follow the Managing clusters in a VPC docs to learn how to modify public accessibility for your clusters.