Sucuri Firewall by Sucuri is a cloud-based Web Application Firewall (WAF) designed to protect websites from hacks and attacks. It intercepts and inspects all incoming HTTP/HTTPS packets to ensure that only safe requests reach the server. Sucuri Firewall provides comprehensive protection against various threats, including malware, brute force attacks, DDoS attacks, and zero-day exploits. It also enhances website performance through high-performance caching and a globally distributed Anycast network. The firewall supports SSL certificates to protect data in transit and offers virtual patching and hardening to mitigate vulnerabilities. It is compatible with all platforms and custom sites, providing a robust defense system for websites of all sizes.