Episode 51 — Cloud networking technology: understand VPC or VNET primitives and routing behaviors

This episode builds the cloud networking foundation the GCLD exam expects by clarifying what core primitives actually do in practice, including address spaces, subnets, route tables, and the separation between control-plane intent and data-plane behavior. You’ll learn how routing decisions are made, how default routes and propagated routes change traffic flow, and why “it should be isolated” is not the same as “it is unreachable.” We’ll connect these concepts to common exam scenarios like unexpected lateral movement, broken segmentation, and misrouted hybrid connectivity. You’ll also explore real-world troubleshooting considerations, including overlapping CIDR blocks, asymmetric routing, and the operational impact of changing routes in shared environments. The goal is to reason confidently about reachability and blast radius using network building blocks rather than assumptions. 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.