ModSecurity - ModSecurity is an Open Source web application firewall developed by Trustwave's SpiderLabs.
Naxsi - NAXSI means Nginx Anti XSS & SQL Injection.
AWS WAF - AWS WAF is a web application firewall that helps protect your web applications from common web exploits.
Cloudflare WAF - Whether you want automatic WAF protection from known vulnerabilities or have custom WAF rules, our real-time platform can do it.
Barracuda Web Application Firewall - Barracuda Web Application Firewall offers security and DDoS protection against automated & targeted attacks.
Imunify360 - Imunify360 is a comprehensive security suite for Linux web servers. It includes antivirus, firewall, WAF, PHP Security Layers, Patch Management, Domain reputation with easy UI and advanced automation.