Security Onion

Health v2 · maintenance only

Flags: no_license

Adoption not part of the score

4846 stars · 670 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Security Onion is a free and open Linux distribution and platform for threat hunting, enterprise security monitoring, and log management. It bundles a unified web console (SOC) with Suricata, Zeek, the Elastic Stack, full packet capture, detections, and case management.

Use cases

• monitor enterprise network security events
• hunt threats with full packet capture and Zeek metadata
• run network intrusion detection with Suricata
• centralize and search security logs
• manage alert triage and investigations with case management
• set up a self-hosted SOC on Linux

When to choose

• you need an all-in-one, self-hosted network security monitoring and IDS platform
• you want Suricata, Zeek, and the Elastic Stack pre-integrated and maintained for you
• you need packet capture, alerting, dashboards, and case management in one console
• you are a SOC, government, or enterprise team doing threat hunting

When to avoid

• you only need a lightweight host-based antivirus or endpoint agent
• you want a fully managed cloud SIEM with no infrastructure to run
• you cannot dedicate the substantial hardware resources Security Onion requires
• you need a simple log shipper rather than a full monitoring distribution

Facets

application · maturity stable

monitoring search-engine logging security alerting analytics security networking monitoring self-hosted developer-tools self-hosted cloud threat-hunting intrusion-detection network-security-monitoring suricata zeek elastic-stack pcap case-management siem log-management linux docker web-server

Member repositories

For agents

markdown · JSON · MCP: product_card(name="Security-Onion-Solutions/securityonion")