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Technitium DNS

system tools

Current version: 12.2.1~ynh1

Technitium DNS Server is an open source tool that can be used for blocking Internet Ads using DNS Sinkhole, self hosting a local DNS server for privacy & security or, used for experimentation/testing by software developers on their computer.


  • Block ads & malware using one or more block list URLs.
  • High performance DNS server based on async IO that can serve millions of requests per minute even on a commodity desktop PC hardware (load tested on Intel i7-8700 CPU with more than 100,000 request/second over Gigabit Ethernet).
  • Self host DNS-over-TLS and DNS-over-HTTPS DNS service on your network.
  • Use public DNS resolvers like Cloudflare, Google & Quad9 with DNS-over-TLS and DNS-over-HTTPS protocols as forwarders.
  • Advanced caching with features like serve stale, prefetching and auto prefetching.
  • Supports working as an authoritative as well as a recursive DNS server.
  • DNSSEC validation support with RSA & ECDSA algorithms for recursive resolver, forwarders, and conditional forwarders.
  • DNSSEC support for all supported DNS transport protocols including encrypted DNS protocols (DoT, DoH, & DoH JSON).
  • CNAME cloaking feature to block domain names that resolve to CNAME which are blocked.
  • Self host your domain names on your own DNS server.
  • Wildcard sub domain support.
Screenshot for Technitium DNS
This app is only compatible with these specific architectures: amd64, arm64, armhf

Useful links

App license: GPL-3.0-only Official website Official admin documentation Official user documentation Official code repository YunoHost package repository YunoHost package license