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feat: add DNS-over-TLS (DoT) listener #25

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razvandimescu merged 19 commits from feat/dns-over-tls into main 2026-04-08 07:53:43 +08:00
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A portable DNS resolver in a single binary. Block ads on any network, name your local services (`frontend.numa`), and override any hostname with auto-revert — all from your laptop, no cloud account or Raspberry Pi required. A portable DNS resolver in a single binary. Block ads on any network, name your local services (`frontend.numa`), and override any hostname with auto-revert — all from your laptop, no cloud account or Raspberry Pi required.
Built from scratch in Rust. Zero DNS libraries. RFC 1035 wire protocol parsed by hand. Caching, ad blocking, and local service domains out of the box. Optional recursive resolution from root nameservers with full DNSSEC chain-of-trust validation. One ~8MB binary, everything embedded. Built from scratch in Rust. Zero DNS libraries. RFC 1035 wire protocol parsed by hand. Caching, ad blocking, and local service domains out of the box. Optional recursive resolution from root nameservers with full DNSSEC chain-of-trust validation, plus a DNS-over-TLS listener for encrypted client connections (iOS Private DNS, systemd-resolved, etc.). One ~8MB binary, everything embedded.
![Numa dashboard](assets/hero-demo.gif) ![Numa dashboard](assets/hero-demo.gif)
@@ -67,6 +67,8 @@ Three resolution modes:
DNSSEC validates the full chain of trust: RRSIG signatures, DNSKEY verification, DS delegation, NSEC/NSEC3 denial proofs. [Read how it works →](https://numa.rs/blog/posts/dnssec-from-scratch.html) DNSSEC validates the full chain of trust: RRSIG signatures, DNSKEY verification, DS delegation, NSEC/NSEC3 denial proofs. [Read how it works →](https://numa.rs/blog/posts/dnssec-from-scratch.html)
**DNS-over-TLS listener** (RFC 7858) — accept encrypted queries on port 853 from strict clients like iOS Private DNS, systemd-resolved, or stubby. Self-signed CA generated automatically, or bring your own cert via `[dot] cert_path` / `key_path` in `numa.toml`. ALPN `"dot"` is advertised and enforced; a handshake with mismatched ALPN is rejected as a cross-protocol confusion defense.
## LAN Discovery ## LAN Discovery
Run Numa on multiple machines. They find each other automatically via mDNS: Run Numa on multiple machines. They find each other automatically via mDNS:
@@ -96,6 +98,7 @@ From Machine B: `curl http://api.numa` → proxied to Machine A's port 8000. Ena
| Ad blocking | Yes | Yes | — | 385K+ domains | | Ad blocking | Yes | Yes | — | 385K+ domains |
| Web admin UI | Full | Full | — | Dashboard | | Web admin UI | Full | Full | — | Dashboard |
| Encrypted upstream (DoH) | Needs cloudflared | Yes | — | Native | | Encrypted upstream (DoH) | Needs cloudflared | Yes | — | Native |
| Encrypted clients (DoT listener) | Needs stunnel sidecar | Yes | Yes | Native (RFC 7858) |
| Portable (laptop) | No (appliance) | No (appliance) | Server | Single binary, macOS/Linux/Windows | | Portable (laptop) | No (appliance) | No (appliance) | Server | Single binary, macOS/Linux/Windows |
| Community maturity | 56K stars, 10 years | 33K stars | 20 years | New | | Community maturity | 56K stars, 10 years | 33K stars | 20 years | New |
@@ -116,6 +119,7 @@ From Machine B: `curl http://api.numa` → proxied to Machine A's port 8000. Ena
- [x] `.numa` local domains — auto TLS, path routing, WebSocket proxy - [x] `.numa` local domains — auto TLS, path routing, WebSocket proxy
- [x] LAN service discovery — mDNS, cross-machine DNS + proxy - [x] LAN service discovery — mDNS, cross-machine DNS + proxy
- [x] DNS-over-HTTPS — encrypted upstream - [x] DNS-over-HTTPS — encrypted upstream
- [x] DNS-over-TLS listener — encrypted client connections (RFC 7858, ALPN strict)
- [x] Recursive resolution + DNSSEC — chain-of-trust, NSEC/NSEC3 - [x] Recursive resolution + DNSSEC — chain-of-trust, NSEC/NSEC3
- [x] SRTT-based nameserver selection - [x] SRTT-based nameserver selection
- [ ] pkarr integration — self-sovereign DNS via Mainline DHT - [ ] pkarr integration — self-sovereign DNS via Mainline DHT