Self Hosted Threat Hunting: Build Your Own Security Lab with Security Onion

Security Onion is a free, open-source platform designed for threat hunting, security monitoring, and log management. It has been around since 2008 and offers interfaces for alerting, analyzing pcap files, detection engineering, and case management. This post explains the various installation modes such as import node, evaluation mode, and standalone mode, along with necessary hardware requirements and network configurations. It highlights how the tool can scale from home labs to enterprise environments.