I try to connect to an AWS database instance from a client by following this tutorial:


I looked for my own IP and pasted it into "Source" as suggested by the website. However, there is an error below. Could some of you help me to understand it?

You may not specify an IPv4 CIDR for an existing referenced group id rule.

Best regards, Bruno P.

1 Answer 1


I just did the drop down of MyIp, then clicked on the box next to it, and did security group, and it allowed me to select default security group

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