A conceptual companion to registry.md's field-level gateway reference. Covers the
two questions (resolve / trust) an internal-only LAN service must answer:
- DNS: gateway-as-ingress, path-prefix vs host routes, LAN name resolution,
wildcard records, split-horizon (internal names, no public A records), and the
private-TLD vs public-subdomain zone styles with the worked router/wild-central
topology.
- TLS: the three gateway.tls modes (off / internal / acme) with when-to-use, the
internal-CA distribution pain vs the acme DNS-01 "no client setup" win, the
secure-context (WebCrypto) rationale, the put-a-service-on-HTTPS recipe,
operational prerequisites (443/80 bind, plugin caddy, DNS token, staging), and a
decision table.
Linked from CLAUDE.md's docs list.
Paul Payne
fa3a646064