It is up to you to define where your peremiter is, and put your protections there. I generally recommend having the WAF live in front of of apps, but with a sm

It is up to you to define where your peremiter is, and put your protections there. I generally recommend having the WAF live in front of of apps, but with a small gap that allows your scanners to still access the app. It is important to still be identifying vulnerabilities that your WAF might block, because they aren't perfect.