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https://github.com/0xERR0R/blocky

Fast and lightweight DNS proxy as ad-blocker for local network with many features
https://github.com/0xERR0R/blocky

ad-blocker adblock adblocker dns dns-over-https dns-server golang parental-control pihole self-hosted selfhosted

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Fast and lightweight DNS proxy as ad-blocker for local network with many features

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# 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 random upstream resolvers from the configuration - increases your privacy through the distribution of your DNS
traffic over multiple provider
- Blocky does **NOT** collect any user data, telemetry, statistics etc.

- **Integration** - various integration

- [Prometheus](https://prometheus.io/) metrics
- Prepared [Grafana](https://grafana.com/) dashboards (Prometheus and database)
- Logging of DNS queries per day / per client in CSV format or MySQL/MariaDB/PostgreSQL/Timescale database - easy to
analyze
- Various REST API endpoints
- CLI tool

- **Simple configuration** - single or multiple configuration files in YAML format

- Simple to maintain
- Simple to backup

- **Simple installation/configuration** - blocky was designed for simple installation

- Stateless (no database, no temporary files)
- Docker image with Multi-arch support
- Single binary
- Supports x86-64 and ARM architectures -> runs fine on Raspberry PI
- Community supported Helm chart for k8s deployment

## Quick start

You can jump to [Installation](https://0xerr0r.github.io/blocky/latest/installation/) chapter in the documentation.

## Full documentation

You can find full documentation and configuration examples
at: [https://0xERR0R.github.io/blocky/](https://0xERR0R.github.io/blocky/)

## Contribution

Issues, feature suggestions and pull requests are welcome!

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