DNS Style Guide

crefft > Infrastructure > DNS

The key words “MUST”, “MUST NOT”, “REQUIRED”, “SHALL”, “SHALL NOT”, “SHOULD”, “SHOULD NOT”, “RECOMMENDED”, “MAY”, and “OPTIONAL” in this document are to be interpreted as described in RFC 2119.

Quick Reference

Task	Tool	Command
Query	dig	`dig example.com`
Trace	dig	`dig +trace example.com`
Check resolver	resolvectl	`resolvectl status`

Overview

TODO: DNS resolver configuration and local DNS services.

Resolver Configuration

TODO: systemd-resolved, /etc/resolv.conf management.

DNS-over-TLS / DNS-over-HTTPS

TODO: Encrypted DNS configuration.

Local DNS Server

TODO: Unbound or dnsmasq for local caching/resolution.

Split-Horizon DNS

TODO: Internal vs external resolution.