A masters-level DNS administration course — not "how to click through a control panel," but how DNS delegation, DNSSEC operations, and email authentication actually work as one connected system. Eleven lessons, each with a real hands-on exercise using MarinaDNS/NODA tools or your own lab environment, closing with a capstone that runs your own domain through everything you've learned.
Free · 11 Lessons
DNS Admin Course
Lesson 1 / 11
Resolution, Caching & Resolvers
Lesson 2 / 11
Delegation, Glue & Redundancy
Lesson 3 / 11
Zone Mechanics
Lesson 4 / 11
Record Types Beyond the Basics
Lesson 5 / 11
DNSSEC I: Chain of Trust
Lesson 6 / 11
DNSSEC II: Operations & Failure Modes
Lesson 7 / 11
DNS as Attack Surface
Lesson 8 / 11
SPF In Depth
Lesson 9 / 11
DKIM In Depth
Lesson 10 / 11
DMARC In Depth
Lesson 11 / 11