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rdme

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Show HN: Running the second public ODoH relay

numa.rs
125 points·by rdme·2 mesi fa·41 comments

Show HN: I built a DNS resolver from scratch in Rust – no DNS libraries

github.com
115 points·by rdme·3 mesi fa·68 comments

comments

rdme
·2 mesi fa·discuss
might want to check https://github.com/alexandru/social-publish
rdme
·2 mesi fa·discuss
actually that is exactly how i am currently running it - dogfooding from my Mac

sudo numa install handles launchd, numa then becomes tailscale's fallback resolver

docker socket service discovery - on the roadmap
rdme
·2 mesi fa·discuss
honestly, nothing major, just deployed the docker-compose to a hetzner $5 instance https://github.com/razvandimescu/numa/tree/main/packaging/re...

then submit a pr to Frank https://github.com/DNSCrypt/dnscrypt-resolvers/blob/master/v...
rdme
·2 mesi fa·discuss
sovereign naming without ICANN or registrars - pkarr through DHT (not blockchain)
rdme
·2 mesi fa·discuss
no, you are actually telling the relay where to redirect your question from the start (because you are encrypting the question with the public key of the destination resolver) - the relay sending the question where it wants would result in the destination to not be able to decrypt it
rdme
·2 mesi fa·discuss
The relay sees IP + ciphertext, the target sees question + relay's IP. No single party gets both
rdme
·2 mesi fa·discuss
I agree with you, however that's a separate problem that needs to be solved
rdme
·2 mesi fa·discuss
They solve different things. ODoH hides your question, not who you're talking to.
rdme
·2 mesi fa·discuss
The relay is a systemd unit on a VPS, Caddy for TLS, SSRF-hardened (regex-strict hostnames, no IP literals). eTLD+1 same-operator check rejects relay+target run by the same org by default. HPKE is odoh-rs from Cloudflare

``` cargo install numa

# set mode = "odoh" in numa.toml ```

Repo: https://github.com/razvandimescu/numa
rdme
·2 mesi fa·discuss
this must be some a/b testing as i’m not seeing anything different

actually it does have a dismissable banner i haven’t even noticed
rdme
·3 mesi fa·discuss
How would this work? One would connect it's repository to a cloud platform that would then act based on the existing daemons of the repo?
rdme
·3 mesi fa·discuss
Just shipped numa v0.13.0: added request hedging (fires a parallel query after 10ms if the primary stalls, inspired by Google's Tail at Scale paper) wire-level cache with serve-stale (RFC 8767) and a DoT client for encrypted upstream.

Wrote about the tail latency investigation: https://numa.rs/blog/posts/fixing-doh-tail-latency.html
rdme
·3 mesi fa·discuss
should be fixed by #54 in 0.10.3 thanks again!
rdme
·3 mesi fa·discuss
Thanks for pointing this out! I’ve created https://github.com/razvandimescu/numa/issues/36
rdme
·3 mesi fa·discuss
let me know how it goes
rdme
·3 mesi fa·discuss
Split DNS already works — Numa auto-detects Tailscale forwarding rules from the system config. Queries matching .<ts.net> go to Tailscale’s DNS, everything else goes through Numa

If you want to skip Tailscale entirely for home servers, Numa’s LAN discovery auto-finds machines running Numa on the same network. Or add static records in numa.toml for machines that don’t run it.
rdme
·3 mesi fa·discuss
This was started as a learning project, went from the start to the lowest level then I've just added features I wanted one by one, it just made the most sense
rdme
·3 mesi fa·discuss
let me know if you do it!
rdme
·3 mesi fa·discuss
Numa can do recursive resolution from root nameservers + DNSSEC, .numa local domains with auto HTTPS for dev, and LAN service discovery. What features would you be interested in?
rdme
·3 mesi fa·discuss
It definitely is and you can see it in the git commits. The DNS wire protocol parser was the original learning project I wrote to understand the spec. Later features (recursive resolver, DNSSEC validation, the dashboard) were built with the help of AI