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Security Onion
Linux distribution From Wikipedia, the free encyclopedia
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Security Onion is a free and open Linux distribution for threat hunting, enterprise security monitoring, and log management.[2] It was developed by Doug Burks in 2008.[3] Its first release was in 2009.[4] It was originally based on Xubuntu 10.04.[5]
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Version 2.4.140 was released on March 24, 2025.[6]
Security Onion combines various tools and technologies to provide a robust IDS solution, including:
- Suricata and Zeek (formerly Bro): These are network-based IDS tools that monitor network traffic for suspicious activities.
- OSSEC: A host-based IDS that monitors system logs and file integrity.
- Elasticsearch, Logstash, and Kibana (ELK stack): These tools are used for log management and analysis, allowing for effective visualization and querying of security events.
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