Episode 9 — Recognize Stand-Alone Systems and Networks Across Critical Infrastructure Sectors

This episode focuses on stand-alone OT systems and isolated networks, because “air gapped” is not the same as “safe,” and the exam often tests that nuance. You’ll learn what stand-alone really means in practice, including limited routing, restricted remote access, or operational separation that still allows maintenance paths, removable media, or occasional connectivity. We discuss critical infrastructure sector realities, where legacy equipment, vendor support models, and safety obligations shape how isolation is implemented and how exceptions are controlled. The episode teaches common risks such as unmanaged portable devices, weak local authentication, unmonitored serial links, and undocumented engineering access, along with best practices for inventory, access governance, and evidence of control. You’ll also get troubleshooting considerations for questions where connectivity is “off,” yet symptoms suggest configuration drift, unauthorized changes, or an overlooked pathway between networks. Produced by BareMetalCyber.com, where you’ll find more cyber audio courses, books, and information to strengthen your educational path. Also, if you want to stay up to date with the latest news, visit DailyCyber.News for a newsletter you can use, and a daily podcast you can commute with.