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<h1 id="blocky">Blocky</h1>
<figure>
<img src="https://raw.githubusercontent.com/0xERR0R/blocky/main/docs/blocky.svg" width="200" />
</figure>
<p>Blocky is a <abbr title="Domain Name System">DNS</abbr> proxy and ad-blocker for the local network written in Go with following features:</p>
<h2 id="features">Features</h2>
<ul>
<li>
<p><strong>Blocking</strong> - <img alt="⛔" class="twemoji" src="https://cdnjs.cloudflare.com/ajax/libs/twemoji/14.0.2/svg/26d4.svg" title=":no_entry:" /> Blocking of <abbr title="Domain Name System">DNS</abbr> queries with external lists (Ad-block, malware) and whitelisting</p>
<ul>
<li>Definition of black and white lists per client group (Kids, Smart home devices, etc.)</li>
<li>Periodical reload of external black and white lists</li>
<li>Regex support</li>
<li>Blocking of request domain, response <abbr title="Canonical Name">CNAME</abbr> (deep <abbr title="Canonical Name">CNAME</abbr> inspection) and response IP addresses (against IP lists)</li>
</ul>
</li>
<li>
<p><strong>Advanced <abbr title="Domain Name System">DNS</abbr> configuration</strong> - <img alt="🤓" class="twemoji" src="https://cdnjs.cloudflare.com/ajax/libs/twemoji/14.0.2/svg/1f913.svg" title=":nerd:" /> not just an ad-blocker</p>
<ul>
<li>Custom <abbr title="Domain Name System">DNS</abbr> resolution for certain domain names</li>
<li>Conditional forwarding to external <abbr title="Domain Name System">DNS</abbr> server</li>
<li>Upstream resolvers can be defined per client group</li>
</ul>
</li>
<li>
<p><strong>Performance</strong> - <img alt="🚀" class="twemoji" src="https://cdnjs.cloudflare.com/ajax/libs/twemoji/14.0.2/svg/1f680.svg" title=":rocket:" /> Improves speed and performance in your network</p>
<ul>
<li>Customizable caching of <abbr title="Domain Name System">DNS</abbr> answers for queries -&gt; improves <abbr title="Domain Name System">DNS</abbr> resolution speed and reduces amount of external <abbr title="Domain Name System">DNS</abbr>
queries</li>
<li>Prefetching and caching of often used queries</li>
<li>Using multiple external resolver simultaneously</li>
<li>Low memory footprint</li>
</ul>
</li>
<li>
<p><strong>Various Protocols</strong> - <img alt="💻" class="twemoji" src="https://cdnjs.cloudflare.com/ajax/libs/twemoji/14.0.2/svg/1f4bb.svg" title=":computer:" /> Supports modern <abbr title="Domain Name System">DNS</abbr> protocols</p>
<ul>
<li><abbr title="Domain Name System">DNS</abbr> over <abbr title="User Datagram Protocol">UDP</abbr> and <abbr title="Transmission Control Protocol">TCP</abbr></li>
<li><abbr title="Domain Name System">DNS</abbr> over <abbr title="Hypertext Transfer Protocol Secure">HTTPS</abbr> (aka <abbr title="DNS-over-HTTPS">DoH</abbr>)</li>
<li><abbr title="Domain Name System">DNS</abbr> over TLS (aka <abbr title="DNS-over-TLS">DoT</abbr>)</li>
</ul>
</li>
<li>
<p><strong>Security and Privacy</strong> - <img alt="🕶" class="twemoji" src="https://cdnjs.cloudflare.com/ajax/libs/twemoji/14.0.2/svg/1f576.svg" title=":dark_sunglasses:" /> Secure communication</p>
<ul>
<li>Supports modern <abbr title="Domain Name System">DNS</abbr> extensions: <abbr title="Domain Name System Security Extensions">DNSSEC</abbr>, <abbr title="Extended DNS">eDNS</abbr>, ...</li>
<li>Free configurable blocking lists - no hidden filtering etc.</li>
<li>Provides <abbr title="DNS-over-HTTPS">DoH</abbr> Endpoint</li>
<li>Uses random upstream resolvers from the configuration - increases your privacy through the distribution of your <abbr title="Domain Name System">DNS</abbr>
traffic over multiple provider</li>
<li>Open source development</li>
<li>Blocky does <strong>NOT</strong> collect any user data, telemetry, statistics etc.</li>
</ul>
</li>
<li>
<p><strong>Integration</strong> - <img alt="📔" class="twemoji" src="https://cdnjs.cloudflare.com/ajax/libs/twemoji/14.0.2/svg/1f4d4.svg" title=":notebook_with_decorative_cover:" /> various integration</p>
<ul>
<li><a href="https://prometheus.io/">Prometheus</a> metrics</li>
<li>Prepared <a href="https://grafana.com/">Grafana</a> dashboards (Prometheus and database)</li>
<li>Logging of <abbr title="Domain Name System">DNS</abbr> queries per day / per client in <abbr title="Comma-separated values">CSV</abbr> format or MySQL/MariaDB/PostgreSQL database - easy to analyze</li>
<li>Various <abbr title="Representational State Transfer">REST</abbr> <abbr title="Application Programming Interface">API</abbr> endpoints</li>
<li><abbr title="Command Line Interface">CLI</abbr> tool</li>
</ul>
</li>
<li>
<p><strong>Simple configuration</strong> - <img alt="👶" class="twemoji" src="https://cdnjs.cloudflare.com/ajax/libs/twemoji/14.0.2/svg/1f476.svg" title=":baby:" /> single configuration file in <abbr title="YAML Ain't Markup Language">YAML</abbr> format</p>
<ul>
<li>Simple to maintain</li>
<li>Simple to backup</li>
</ul>
</li>
<li>
<p><strong>Simple installation/configuration</strong> - <img alt="☁" class="twemoji" src="https://cdnjs.cloudflare.com/ajax/libs/twemoji/14.0.2/svg/2601.svg" title=":cloud:" /> blocky was designed for simple installation</p>
<ul>
<li>Stateless (no database, no temporary files)</li>
<li>Docker image with Multi-arch support</li>
<li>Single binary</li>
<li>Supports x86-64 and ARM architectures -&gt; runs fine on Raspberry PI</li>
<li>Community supported <abbr title="package manager for Kubernetes">Helm</abbr> chart for <abbr title="Kubernetes">k8s</abbr> deployment</li>
</ul>
</li>
</ul>
<h2 id="contribution">Contribution</h2>
<p>Issues, feature suggestions and pull requests are welcome! Blocky lives on <span class="twemoji"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M12 2A10 10 0 0 0 2 12c0 4.42 2.87 8.17 6.84 9.5.5.08.66-.23.66-.5v-1.69c-2.77.6-3.36-1.34-3.36-1.34-.46-1.16-1.11-1.47-1.11-1.47-.91-.62.07-.6.07-.6 1 .07 1.53 1.03 1.53 1.03.87 1.52 2.34 1.07 2.91.83.09-.65.35-1.09.63-1.34-2.22-.25-4.55-1.11-4.55-4.92 0-1.11.38-2 1.03-2.71-.1-.25-.45-1.29.1-2.64 0 0 .84-.27 2.75 1.02.79-.22 1.65-.33 2.5-.33.85 0 1.71.11 2.5.33 1.91-1.29 2.75-1.02 2.75-1.02.55 1.35.2 2.39.1 2.64.65.71 1.03 1.6 1.03 2.71 0 3.82-2.34 4.66-4.57 4.91.36.31.69.92.69 1.85V21c0 .27.16.59.67.5C19.14 20.16 22 16.42 22 12A10 10 0 0 0 12 2Z"/></svg></span><a href="https://github.com/0xERR0R/blocky">GitHub</a>.</p>
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