A VPC (Virtual Private Cloud) peering connection allows two VPCs to communicate with each other privately across the AWS network. An alarm for VPC peering changes is triggered when a change is made to the VPC peering connection, such as the addition, deletion, or modification of a peering connection. This alarm helps to identify any unauthorized or accidental changes that could potentially compromise the security of the VPC network.


Here are some remediation steps for the VPC peering changes alarm:

  1. Audit the VPC peering connections: Review the VPC peering connections and their configurations regularly to ensure that only authorized and necessary connections exist.
  2. Enable VPC flow logs: Enable VPC flow logs to monitor the network traffic between the VPCs and to detect any suspicious activity.
  3. Review IAM policies: Review the IAM policies and ensure that only authorized users have permissions to create, modify or delete the VPC peering connections.
  4. Implement a change management process: Establish a change management process for making changes to the VPC peering connections. Ensure that all changes go through the appropriate approval process, and only authorized personnel can make changes.
  5. Monitor CloudTrail logs: Monitor AWS CloudTrail logs for any changes made to the VPC peering connections, including the creation, modification or deletion of connections.
  6. Implement network security best practices: Implement network security best practices, such as using strong passwords, enabling multi-factor authentication, and restricting access to the VPCs.
  7. Regularly review security configurations: Regularly review security configurations and make necessary adjustments to ensure that the VPC peering connections are secure and meet the organization's security requirements.
Enforced Resources
Note: Remediation steps provided by Lightlytics are meant to be suggestions and guidelines only. It is crucial to thoroughly verify and test any remediation steps before applying them to production environments. Each organization's infrastructure and security needs may differ, and blindly applying suggested remediation steps without proper testing could potentially cause unforeseen issues or vulnerabilities. Therefore, it is strongly recommended that you validate and customize any remediation steps to meet your organization's specific requirements and ensure that they align with your security policies and best practices.