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Remediation

Enable Delete Protection for the Firewall​

To prevent accidental or unauthorized deletion, enable Delete Protection on the AWS Network Firewall.

From Command Line​

Run the following command to enable delete protection:

aws network-firewall update-firewall-delete-protection \
--firewall-arn {{firewall-arn}} \
--delete-protection-enabled

Once enabled, delete protection must be explicitly disabled before the firewall can be deleted.