Suricata - Suricata is a high performance Network IDS, IPS and Network Security Monitoring engine.
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.
Zeek - Buy and sell gift vouchers
snort - Snort is a free and open source network intrusion prevention system.
Maltrail - Malicious traffic detection system. Contribute to stamparm/maltrail development by creating an account on GitHub.
SRX firewalls - Protect your small branch office, midsize enterprise, large data center, or cloud applications with Juniper next-generation firewalls and virtual firewalls.