Deny EC2 SSH to RDS

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I have create a security group for the RDS Database Instance. The security group has a rule to allow TCP 3306 for MySQL/Aurora from a specific IP, which is a EC2. This EC2 is an app server and I only want it to connect to the RDS from the application.

However, I discover that I can also ssh into the RDS DBI from that app server EC2. I have configured a Bastion for developers to ssh into the RDS DBI so I do not want when someone logged into the app server then ssh to the RDS.

Can I please get advise how do I stop ssh access to the RDS from the app server?

hannah
asked 3 months ago68 views
1 Answer
1
Accepted Answer

Hi,

You can't limit it on the networking layer. If you have CI/CD you don't need to have access to the app EC2 at all, so you can limit access only to bastion.

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EXPERT
answered 3 months ago
  • No, we don't have CI/CD. I think you mean to deny users to ssh access to EC2.

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