ホーム > AWS > How to Resolve 'You Cannot Specify a Group ID for an Existing IPv4 CIDR Rule'【AWS】
AWS

How to Resolve 'You Cannot Specify a Group ID for an Existing IPv4 CIDR Rule'【AWS】

Thank you for your continued support.
This article contains advertisements that help fund our operations.

Table Of Contents

  1. Error Message
  2. Solution
  3. Background

A guide to resolving the 'You cannot specify a group ID for an existing IPv4 CIDR rule' error in AWS security group settings.

PR

Error Message

You cannot specify a group ID for an existing IPv4 CIDR rule

aws error security group existing ipv4 cidr

Solution

Press the Add Rule button again to add a new row, and configure the settings.

Background

Before encountering this error, I was initially specifying an IP address in this field instead of a security group. I removed the IP address and attempted to select a security group, which triggered the error.

Since the error indicated "You cannot specify a group ID for an existing IPv4 CIDR rule," I tried specifying the security group as a new entry, which resolved the issue.

I spent around 15 minutes troubleshooting this, so I hope this helps someone.

Please Provide Feedback
We would appreciate your feedback on this article. Feel free to leave a comment on any relevant YouTube video or reach out through the contact form. Thank you!