To ensure that your network traffic is under your control, it is recommended to enable Enhanced VPC Routing for your Amazon Redshift data warehouse clusters. This feature forces traffic between your clusters and AWS cloud resources to go through the Virtual Private Cloud (VPC), instead of the Internet. When Enhanced VPC Routing is enabled, you can leverage VPC network features such as security groups, Network Access Control Lists (NACLs), VPC endpoints, VPC endpoint policies, Internet gateways, and Domain Name System (DNS) servers to tightly manage the flow of data between your Amazon Redshift clusters and other cloud resources. By using these features, you can ensure that your network traffic is secure and controlled.
Here are the remediation steps to ensure that Enhanced VPC Routing is enabled for your Amazon Redshift clusters:
Once the above steps are completed, Enhanced VPC Routing will be enabled for your Amazon Redshift cluster, and your network traffic will be routed through the Virtual Private Cloud (VPC). You can then use standard VPC network features to manage the flow of data between your Amazon Redshift clusters and other cloud resources.