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tor - LEAP Platform Documentation
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<h1>tor</h1>

<div id='summary'>Tor services: relay, exit node and hidden service</div>
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<div id="TOC"><ol>
  <li>
    <a href="index.html#topology">Topology</a>
  </li>
  <li>
    <a href="index.html#configuration">Configuration</a>
  </li>
</ol></div>

<h2><a name="topology"></a>Topology</h2>

<p>Nodes with <code>tor</code> service will run a Tor relay with some pre-defined settings, which can be changed with some configuration (see <em>Configuration</em> below). You can enable an exit or a hidden service with additional configuration.</p>

<h2><a name="configuration"></a>Configuration</h2>

<p>By default, if a node has service &lsquo;tor&rsquo; configured, it will run a tor relay (not an exit). The relay will be configured with bandwidth limitations, contacts, a nickname and a family. The defaults for these (shown below), can be overridden as desired.</p>

<ul>
<li><code>tor.bandwidth_rate</code>: the max bandwidth allocated to Tor, in KB per second, when used as an exit node (default: 6550 KB/sec).</li>
<li><code>tor.type</code>: what type of tor node to make, at this moment only &lsquo;exit&rsquo; is supported. If not specified, acts as a relay.</li>
<li><code>tor.contacts</code>: the contact information for the relay (default: the list of provider contacts)</li>
<li><code>tor.nickname</code>: the nickname of the relay (default: a combination of the node name and a hash of the family)</li>
<li><code>tor.family</code>: a list of the other nicknames that are part of the same provider</li>
<li><code>tor.hidden_service</code>: to enable a hidden service, set &lsquo;active&rsquo; to be true (see below for an example), do <em>not</em> configure &ldquo;services&rdquo;: [&ldquo;tor&rdquo;] for the node!</li>
</ul>


<p>Examples:</p>

<p>To add a relay to a node:</p>

<pre><code>{
 "services": ["tor"]
}
</code></pre>

<p>To enable a hidden service, without a relay, do <em>not</em> specify the tor service (it is not considered secure to have a node configured as a relay and a hidden service at the same time, see: <a href="https://trac.torproject.org/8742">https://trac.torproject.org/8742</a>), instead configure the node to have the following:</p>

<pre><code>{
  "tor": {
    "hidden_service": {
    "active": true
  }
}
</code></pre>

<p>If activated, you can list the hidden service .onion addresses this way:</p>

<p>   leap ls &ndash;print tor.hidden_service.address tor</p>

<p>Then just add &lsquo;.onion&rsquo; to the end of the printed addresses.</p>

<p>To enable a Tor exit node:</p>

<pre><code>{
  "tor": {
    "bandwidth_rate": 6550,
    "type": "exit"
  }
}
</code></pre>

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