Open Source Monitoring Systems/Tools

Network Intrusion

Tool	Link	Description
OSSEC	https://www.ossec.net/	Host Intrusion Detection System
Suricata	https://suricata-ids.org/	Open Source network threat detection engine
Zeek	https://zeek.org/	Open Source Network Security Monitoring Tool
Snort	https://www.snort.org/	Open Source network intrusion detection system
Moloch	https://molo.ch/	Large Scale, indexed packet capture and search