DNS — The Internet's Quiet Backbone: A Series Introduction Series Recap
Why I'm writing a four-part DNS series in 2026. Notes from 25 years of teaching the topic that most engineers — and most curricula — quietly underestimate.
#infrastructure
DNS, Part 4 — When DNS Lies: Cache Poisoning, Spoofing, and How to Defend Yourself Part 4
How DNS attacks actually work — Kaminsky, Sea Turtle, MyEtherWallet, DigiNotar — and the layered defenses that hold up: DNSSEC, DoH, CAA, registrar lock.
DNS, Part 1 — From /etc/hosts to BIND-9: The Origin Story Every SRE Should Know Part 1
A practitioner's tour of DNS — from the hosts file era and BIND at Berkeley to CoreDNS in Kubernetes — and the record types every engineer should actually understand.