Networking

Learn networking fundamentals, configuration, troubleshooting, and security for enterprise and cloud environments.

DNS Security Networking

DNSSEC Deep Dive: Chain of Trust, KSK/ZSK, DS/DNSKEY/RRSIG, NSEC3, Key Rollovers + Troubleshooting SERVFAIL – Part 2

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Continuation from Part 1 – DNS record types cheat sheet This post is a continuation of Part 1: DNS Record Types Explained + Troubleshooting, where we covered the practical purpose of each DNS record type and how to debug common resolution problems.Now we move into the layer that changes the rules of failure: DNSSEC. With […]

DNS Networking

DNS Record Types Explained: A, AAAA, CNAME, MX, TXT, SRV, CAA, PTR, HTTPS/SVCB + Deep Troubleshooting – Part 1

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DNS looks deceptively simple—names in, IPs out—but production DNS is a distributed database with caching, delegation boundaries, transport quirks, and cryptographic validation (DNSSEC) layered on top. This guide is written as a “field manual”: what each DNS record type does, when to use it, how to configure it, and what to check when it breaks.

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