Episode 13 — Implement robust network security controls that hold
This episode teaches the network security control concepts the ISA exam expects you to apply, not just recognize, including boundary protection, traffic restriction, and proof of enforcement. You’ll connect the idea of “only what is necessary” to practical rule design, and you’ll learn how to evaluate whether firewall rules, ACLs, security groups, and routing controls actually support PCI intent. We’ll use real patterns like e-commerce tiers, DMZ designs, and management networks to show how permitted paths are justified, documented, and tested, and why “it works” is not the same as “it is controlled.” You’ll also learn how to troubleshoot common weaknesses such as any-to-any rules, stale objects, shared admin networks, or overly broad vendor access, and how those issues show up in evidence like rule reviews, change tickets, and configuration exports. By the end, you’ll be able to explain network control effectiveness in a way that maps to exam scenarios and holds up under assessment scrutiny. 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.
