Security-Onion-Solutions/securityonion

Security Onion is a free and open platform for threat hunting, enterprise security monitoring, and log management. It includes our own interfaces for alerting, dashboards, hunting, PCAP, detections, and case management. It also includes other tools such as osquery, CyberChef, Elasticsearch, Logstash, Kibana, Suricata, and Zeek.

Shell

4,929

17,454 commits

updated Oct 14, 2026

See the code

README

Security Onion Logo

Security Onion

Security Onion is a free and open Linux distribution for threat hunting, enterprise security monitoring, and log management. It includes a comprehensive suite of tools designed to work together to provide visibility into your network and host activity.

✨ Features

Security Onion includes everything you need to monitor your network and host systems:

  • Security Onion Console (SOC): A unified web interface for analyzing security events and managing your grid.
  • Elastic Stack: Powerful search backed by Elasticsearch.
  • Intrusion Detection: Network-based IDS with Suricata and host-based monitoring with Elastic Fleet.
  • Network Metadata: Detailed network metadata generated by Zeek or Suricata.
  • Full Packet Capture: Retain and analyze raw network traffic with Suricata PCAP.

⭐ Security Onion Pro

For organizations and enterprises requiring advanced capabilities, Security Onion Pro offers additional features designed for scale and efficiency:

  • Onion AI: Leverage powerful AI-driven insights to accelerate your analysis and investigations.
  • Enterprise Features: Enhanced tools and integrations tailored for enterprise-grade security operations.

For more information, visit the Security Onion Pro page.

☁️ Cloud Deployment

Security Onion is available and ready to deploy in the AWS, Azure, and Google Cloud (GCP) marketplaces.

🚀 Getting Started

GoalResource
DownloadSecurity Onion ISO
RequirementsHardware Guide
InstallInstallation Instructions
What's NewRelease Notes

📖 Documentation & Support

For more detailed information, please visit our Documentation.

🤝 Contributing

We welcome contributions! Please see our CONTRIBUTING.md for guidelines on how to get involved.

🛡️ License

Security Onion is licensed under the terms of the license found in the LICENSE file.


Built with 🧅 by Security Onion Solutions.

case-management
cyber-security
endpoint-security
information-security
intrusion-detection-system
monitoring
network-security
security
security-tools
threat-hunting

Security-Onion-Solutions/securityonion

Security Onion is a free and open platform for threat hunting, enterprise security monitoring, and log management. It includes our own interfaces for alerting, dashboards, hunting, PCAP, detections, and case management. It also includes other tools such as osquery, CyberChef, Elasticsearch, Logstash, Kibana, Suricata, and Zeek.

Shell

4,929

17,454 commits

updated Oct 14, 2026

See the code

README

Security Onion Logo

Security Onion

Security Onion is a free and open Linux distribution for threat hunting, enterprise security monitoring, and log management. It includes a comprehensive suite of tools designed to work together to provide visibility into your network and host activity.

✨ Features

Security Onion includes everything you need to monitor your network and host systems:

  • Security Onion Console (SOC): A unified web interface for analyzing security events and managing your grid.
  • Elastic Stack: Powerful search backed by Elasticsearch.
  • Intrusion Detection: Network-based IDS with Suricata and host-based monitoring with Elastic Fleet.
  • Network Metadata: Detailed network metadata generated by Zeek or Suricata.
  • Full Packet Capture: Retain and analyze raw network traffic with Suricata PCAP.

⭐ Security Onion Pro

For organizations and enterprises requiring advanced capabilities, Security Onion Pro offers additional features designed for scale and efficiency:

  • Onion AI: Leverage powerful AI-driven insights to accelerate your analysis and investigations.
  • Enterprise Features: Enhanced tools and integrations tailored for enterprise-grade security operations.

For more information, visit the Security Onion Pro page.

☁️ Cloud Deployment

Security Onion is available and ready to deploy in the AWS, Azure, and Google Cloud (GCP) marketplaces.

🚀 Getting Started

GoalResource
DownloadSecurity Onion ISO
RequirementsHardware Guide
InstallInstallation Instructions
What's NewRelease Notes

📖 Documentation & Support

For more detailed information, please visit our Documentation.

🤝 Contributing

We welcome contributions! Please see our CONTRIBUTING.md for guidelines on how to get involved.

🛡️ License

Security Onion is licensed under the terms of the license found in the LICENSE file.


Built with 🧅 by Security Onion Solutions.

case-management
cyber-security
endpoint-security
information-security
intrusion-detection-system
monitoring
network-security
security
security-tools
threat-hunting

Project health

Overall

5.0/10

Maintained

10/10

Code review

10/10
OpenSSF Scorecard

Significant stargazers

Andi Chandler

24 followers · starred Sep 2022

Jared Burrows

507 followers · starred Nov 2024

Dale Lakes

73 followers · starred Feb 2022

Nissar Chababy

238 followers · starred Aug 2023