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/How to whitelist an RDS endpoint/

How to whitelist an RDS endpoint

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I need to whitelist an RDS Postgres endpoint in my security group. But the form only accepts CIDR block, SecurityGroup ID or Prefix list. How can I work around this?

1 Answers
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When you add the security group rule, choose Custom, then input the ID of the RDS's Security Group (sg-abcdefg)

https://docs.aws.amazon.com/vpc/latest/userguide/VPC_SecurityGroups.html#adding-security-group-rules

In this way, you are whitelisting all instance that use that particular Security Group sg-abcdefg (Including the RDS instance)

To avoid over whitelisting, I would also suggest creating a dedicated Security Group for the RDS instance.

answered 22 days ago

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