configuring-vpc-endpoints-for-private-aws-service-access

Configuring VPC endpoints for private AWS service access involves creating gateway endpoints for S3 and DynamoDB and interface endpoints for EC2, SSM, and Secrets Manager. You apply security groups, DNS settings, and route tables to maintain private connectivity without internet exposure.

Gateway endpoints route traffic for S3 and DynamoDB through the AWS network using route tables, while interface endpoints use elastic network interfaces and security groups to enable private access to services like EC2, SSM, and Secrets Manager.

Verify VPC endpoint connectivity by running AWS CLI and boto3 commands from an EC2 instance to test private access. This confirms your DNS settings, security groups, and route tables correctly route traffic to services like SSM or Secrets Manager without internet exposure.

No, configuring VPC endpoints with PrivateLink eliminates the need for NAT gateways or public IPs to access AWS services. Traffic remains securely within the AWS network, satisfying compliant network boundary requirements for data-intensive applications.

Interface VPC endpoints require security groups to control inbound traffic to the endpoint network interfaces and proper DNS settings to resolve AWS service DNS names to the private IP addresses of those interfaces within your VPC.