Load Impact - How many users can my web site handle?
pfSense - pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more
Check Point Quantum Security Gateway - Quantum is the next-generation VPN security gateway that delivers the core security benefits of a firewall, next-generation IPS, antivirus, and Web-filtering without sacrificing performance.
F5 Advanced Firewall Manager - Stop even the most massive and complex DDoS attacks with BIG-IP Advanced Firewall Manager: advanced data center protection against layer 3–4 threats.
DataSunrise Database Security - DataSunrise Database Security Software secures the databases and data in real-time with high performance.
FireMon - FireMon Security Intelligence Platform delivers continuous visibility into and control over firewall infrastructure.