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A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.

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leng - a fast DNS server with adblocking, built for self-hosting (github.com)

submitted 1 year ago by [email protected] to c/[email protected]

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A few months ago I went on a quest for a DNS server and was dissatisfied with current maintained projects. They were either good at adblocking (Blocky, grimd...) or good at specifying custom DNS (CoreDNS...).

So I forked grimd and embarked on rewriting a good chunk of it for it to address my needs - the result is leng.

it is fast
it is small
it is easy
you can specify blocklists and it will fetch them for you
you can specify custom DNS records with proper zone file syntax (SRV records, etc)
it supports DNS-over-HTTPS so you can stay private
it is well-documented
can be deployed on systemd, docker, or Nix

I have been running it as my nameserver in a Nomad cluster since! I plan to keep maintaining and improving it, so feel free to give it a try if it also fulfils your needs

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[–] [email protected] 1 points 1 year ago (1 children)

Leng will cache each step of recursion, and it relies on upstream resolvers to do recursion for it as well (like grimd), so you should not be seeing 200ms resolution in any scenario.

I am keen for you to give it a shot - if you do please make an issue if it's not behaving like you were hoping for

[–] [email protected] 1 points 1 year ago (1 children)

Ahh interesting. So do you have to manually set an upstream dns server?

[–] [email protected] 1 points 1 year ago

Correct, and much like grimd you can specify several. But unlike grimd, leng will perform recursion when the upstream server is not capable of resolving queries completely (namely, because a CNAME resolved by upstream somewhere points to a domain that is part of your custom DNS records, or vice versa)