Production DNS with BIND 9 and Unbound
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Lesson 8 of 12 · Resolver, DNSSEC and mail

DNSSEC: sign with dnssec-policy, roll keys, validate and troubleshoot

1 h 10 min Debian 12 Versions BIND 9.16, BIND 9.18, BIND 9.20, Unbound 1.17+

Objective

Sign masterlinux.lab without handling a single signature by hand, understand what BIND does during a key rollover, have resolvers validate the answers, and find the cause of a DNSSEC SERVFAIL in a few minutes. That is the incident that makes the most noise.

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