Last Updated on June 7, 2022
Question: If we have an existing AWS Network Firewall or AWS Web Application Firewall (WAF), can it be managed by AWS Managed Firewall in the future?
Unfortunately, AWS Firewall Manager does not recognize any AWS Network Firewall or AWS WAF that are launched outside of its framework.
You will have to delete the existing AWS Network Firewall or AWS WAF and recreate them using AWS Firewall Manager then attach them to their target AWS Resources.
This covers AWS WAFv2 and AWS WAF classic.
Unfortunately, I was not able to locate this in the AWS documentation but had to experience this the hard way.