Web application firewalls (WAFs) rely on essential technologies like application layer filtering and request/response inspection. These firewalls monitor and control incoming and outgoing traffic to web applications, protecting against attacks such as SQL injection and cross-site scripting (XSS). By filtering HTTP requests, WAFs can detect vulnerabilities at the application layer, allowing organizations to defend against threats while ensuring the integrity and availability of their web applications. Implementing a robust WAF is crucial for maintaining a security posture in today’s threat landscape.