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LEARN SECURITY ONION: Master Monitoring, Detection, and Incident Response in Corporate and Multicloud Environments

This book is intended for students and professionals seeking a direct and practical guide to deploy and operate Security Onion as a Network Security Monitoring foundation in corporate, hybrid, and multicloud environments. It covers everything from installation and architecture (standalone and distributed), visibility planning and sensor placement, to telemetry with Zeek, detection with Suricata, Full Packet Capture, integration with Wazuh, correlation with MITRE ATT&CK, SIEM integration, threat intelligence, automation, and log governance, with a focus on stability, coherent retention, and investigation supported by evidence.

You will learn to:

• Deploy and validate the platform with proper sizing of CPU, memory, network, and storage;
• Plan north-south and east-west coverage, configure SPAN/TAP, and optimize capture;
• Operate the internal architecture (Sensor, Manager, Search, and Storage) and maintain a consistent ingestion pipeline;
• Index and query events in Elastic/OpenSearch with performance and predictability;
• Apply hot, warm, and cold retention without compromising the cluster;
• Interpret network telemetry, tune detection rules, and reduce false positives;
• Integrate endpoint telemetry, correlate host and network data, and structure operational hunting;
• Automate responses with control, auditing, and traceability;
• Sustain compliance, continuity, and SOC operations with clear metrics.

By the end, the reader will be prepared to structure a monitoring and response operation with Security Onion, connecting telemetry, detection, correlation, and governance within a reliable and auditable infrastructure.