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.
Next-Generation Intrusion Prevention System (NGIPS) - Cisco Firepower NGIPS (Next-Generation IPS) provides contextual awareness, security intelligence, and advanced threat protection against attacks and malware.
pfSense - pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more
snort - Snort is a free and open source network intrusion prevention system.
FireMon - FireMon Security Intelligence Platform delivers continuous visibility into and control over firewall infrastructure.
Suricata - Suricata is a high performance Network IDS, IPS and Network Security Monitoring engine.