blocky

Blocky is a DNS proxy and ad-blocker for the local network written in Go with following features:

Features

• Blocking - Blocking of DNS queries with external lists (Ad-block, malware) and allowlisting

  • Definition of allow/denylists per client group (Kids, Smart home devices, etc.)
  • Periodical reload of external allow/denylists
  • Regex support
  • Blocking of request domain, response CNAME (deep CNAME inspection) and response IP addresses (against IP lists)

• Advanced DNS configuration - not just an ad-blocker

  • Custom DNS resolution for certain domain names
  • Conditional forwarding to external DNS server
  • Upstream resolvers can be defined per client group

• Performance - Improves speed and performance in your network

  • Customizable caching of DNS answers for queries -> improves DNS resolution speed and reduces amount of external DNS queries
  • Prefetching and caching of often used queries
  • Using multiple external resolver simultaneously
  • Low memory footprint

• Various Protocols - Supports modern DNS protocols

  • DNS over UDP and TCP
  • DNS over HTTPS (aka DoH)
  • DNS over TLS (aka DoT)

• Security and Privacy - Secure communication

  • Supports modern DNS extensions: DNSSEC, eDNS, ...
  • Free configurable blocking lists - no hidden filtering etc.
  • Provides DoH Endpoint
  • Uses ran