Episode 21 — Decode DNS and DHCP Mechanics That Help Devices Find Each Other
This episode explores the essential protocols that manage how devices identify themselves and locate others across a network, specifically focusing on the Domain Name System (D N S) and the Dynamic Host Configuration Protocol (D H C P). We define D N S as the service that translates human-readable hostnames into the numerical I P addresses required for routing, acting essentially as the internet's phonebook. Conversely, D H C P is explained through the D O R A process—Discover, Offer, Request, and Acknowledgment—which automates the assignment of temporary I P leases to devices as they join a network. For the G I S F exam, you must understand how these services provide the connectivity foundation for every other security control and why protecting them from spoofing or exhaustion attacks is a primary professional responsibility. We discuss best practices such as monitoring D N S logs for unusual outbound queries and ensuring that D H C P scopes are correctly managed to prevent unauthorized device connections. Mastering these mechanics is vital for understanding how traffic is directed and controlled within a secure infrastructure. 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.
