A Laravel application can validate input, escape output, and reject some bad requests inside controllers. That still leaves a gap. Hostile HTTP traffic reaches PHP before those checks run. If you are working through how to protect a Laravel app with a WAF, treat the job as a front-door decision: put a reverse-proxy firewall on the public side, keep Laravel as the upstream, and refuse any setup the supplied product docs do not actually describe.

SafeLine is a self-hosted web application firewall. Its introduction says a WAF filters and monitors HTTP traffic between a web application and the Internet, and that deploying one in front of an application places a shield between the app and clients ( https://docs.waf.chaitin.com/en/home ). The application guide is more specific about the mechanism. SafeLine is developed on nginx and acts as an HTTP and HTTPS reverse proxy.…