The Sucuri Firewall is an innovative cloud-based Website Application Firewall (WAF) and Intrusion Prevention System (IPS) for protecting websites. It functions as a reverse proxy by intercepting and inspecting all incoming HTTP/HTTPS requests to your website and stripping them of any malicious requests before the they arrive safely at your server. The Sucuri Firewall includes automatic virtual patching and hardening engines that offer real-time mitigation of threats, with no impact to the website.