Episode 16 — Network Segmentation: VLANs, Zones, and Trust

Segmentation is one of the simplest yet most powerful ways to contain risk, and this episode explores how it works in practice. You’ll learn how Virtual Local Area Networks, or VLANs, separate traffic within the same physical infrastructure, reducing the blast radius of a breach and improving performance. We explain the concept of trust zones—logical areas that group systems by sensitivity or function—and how policies define what can move between them. The discussion also touches on the importance of planning: understanding traffic flows, labeling assets, and defining clear rules before you deploy segmentation controls.Listeners will hear how segmentation underpins both compliance and Zero Trust design. Through examples of DMZ setups, guest network isolation, and cloud VPC segmentation, you’ll see how architecture choices directly affect detection and response speed. We also explain how misconfigurations—like open inter-VLAN routing or overbroad firewall rules—can quietly erase segmentation benefits. The episode closes with tips for verifying segmentation effectiveness using scanners, flow records, and simulated attack paths, so you can prove isolation rather than assume it. 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.

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