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diff --git a/v1.107/setup/turn/eturnal.html b/v1.107/setup/turn/eturnal.html new file mode 100644 index 0000000000..c59606552c --- /dev/null +++ b/v1.107/setup/turn/eturnal.html @@ -0,0 +1,339 @@ +<!DOCTYPE HTML> +<html lang="en" class="sidebar-visible no-js light"> + <head> + <!-- Book generated using mdBook --> + <meta charset="UTF-8"> + <title>eturnal TURN server - Synapse</title> + <!-- Custom HTML head --> + <meta content="text/html; charset=utf-8" http-equiv="Content-Type"> + <meta name="description" content=""> + <meta name="viewport" content="width=device-width, initial-scale=1"> + <meta name="theme-color" content="#ffffff" /> + + <link rel="icon" href="../../favicon.svg"> + <link rel="shortcut icon" href="../../favicon.png"> + <link rel="stylesheet" href="../../css/variables.css"> + <link rel="stylesheet" href="../../css/general.css"> + <link rel="stylesheet" href="../../css/chrome.css"> + <link rel="stylesheet" href="../../css/print.css" media="print"> + <!-- Fonts --> + <link rel="stylesheet" href="../../FontAwesome/css/font-awesome.css"> + <link rel="stylesheet" href="../../fonts/fonts.css"> + <!-- Highlight.js Stylesheets --> + <link rel="stylesheet" href="../../highlight.css"> + <link rel="stylesheet" href="../../tomorrow-night.css"> + <link rel="stylesheet" href="../../ayu-highlight.css"> + + <!-- Custom theme stylesheets --> + <link rel="stylesheet" href="../../docs/website_files/table-of-contents.css"> + <link rel="stylesheet" href="../../docs/website_files/remove-nav-buttons.css"> + <link rel="stylesheet" href="../../docs/website_files/indent-section-headers.css"> + <link rel="stylesheet" href="../../docs/website_files/version-picker.css"> + </head> + <body> + <!-- Provide site root to javascript --> + <script type="text/javascript"> + var path_to_root = "../../"; + var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? 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They are +all described <a href="https://github.com/processone/eturnal#installation">here</a>.</p> +<p>Quick-Test instructions in a <a href="https://github.com/processone/eturnal/blob/master/QUICK-TEST.md">Linux Shell</a> +or with <a href="https://github.com/processone/eturnal/blob/master/docker-k8s/QUICK-TEST.md">Docker</a> +are available as well.</p> +<h3 id="configuration"><a class="header" href="#configuration">Configuration</a></h3> +<p>After installation, <code>eturnal</code> usually ships a <a href="https://github.com/processone/eturnal/blob/master/config/eturnal.yml">default configuration file</a> +here: <code>/etc/eturnal.yml</code> (and, if not found there, there is a backup file here: +<code>/opt/eturnal/etc/eturnal.yml</code>). It uses the (indentation-sensitive!) <a href="https://en.wikipedia.org/wiki/YAML">YAML</a> +format. The file contains further explanations.</p> +<p>Here are some hints how to configure eturnal on your <a href="https://github.com/processone/eturnal#configuration">host machine</a> +or when using e.g. <a href="https://eturnal.net/documentation/code/docker.html">Docker</a>. +You may also further deep dive into the <a href="https://eturnal.net/documentation/">reference documentation</a>.</p> +<p><code>eturnal</code> runs out of the box with the default configuration. To enable TURN and +to integrate it with your homeserver, some aspects in <code>eturnal</code>'s default configuration file +must be edited:</p> +<ol> +<li> +<p>Homeserver's <a href="../../usage/configuration/config_documentation.html#turn_shared_secret"><code>turn_shared_secret</code></a> +and eturnal's shared <code>secret</code> for authentication</p> +<p>Both need to have the same value. Uncomment and adjust this line in <code>eturnal</code>'s +configuration file:</p> +<pre><code class="language-yaml">secret: "long-and-cryptic" # Shared secret, CHANGE THIS. +</code></pre> +<p>One way to generate a <code>secret</code> is with <code>pwgen</code>:</p> +<pre><code class="language-sh">pwgen -s 64 1 +</code></pre> +</li> +<li> +<p>Public IP address</p> +<p>If your TURN server is behind NAT, the NAT gateway must have an external, +publicly-reachable IP address. <code>eturnal</code> tries to autodetect the public IP address, +however, it may also be configured by uncommenting and adjusting this line, so +<code>eturnal</code> advertises that address to connecting clients:</p> +<pre><code class="language-yaml">relay_ipv4_addr: "203.0.113.4" # The server's public IPv4 address. +</code></pre> +<p>If your NAT gateway is reachable over both IPv4 and IPv6, you may +configure <code>eturnal</code> to advertise each available address:</p> +<pre><code class="language-yaml">relay_ipv4_addr: "203.0.113.4" # The server's public IPv4 address. +relay_ipv6_addr: "2001:db8::4" # The server's public IPv6 address (optional). +</code></pre> +<p>When advertising an external IPv6 address, ensure that the firewall and +network settings of the system running your TURN server are configured to +accept IPv6 traffic, and that the TURN server is listening on the local +IPv6 address that is mapped by NAT to the external IPv6 address.</p> +</li> +<li> +<p>Logging</p> +<p>If <code>eturnal</code> was started by systemd, log files are written into the +<code>/var/log/eturnal</code> directory by default. In order to log to the <a href="https://www.freedesktop.org/software/systemd/man/systemd-journald.service.html">journal</a> +instead, the <code>log_dir</code> option can be set to <code>stdout</code> in the configuration file.</p> +</li> +<li> +<p>Security considerations</p> +<p>Consider your security settings. TURN lets users request a relay which will +connect to arbitrary IP addresses and ports. The following configuration is +suggested as a minimum starting point, <a href="https://eturnal.net/documentation/#blacklist">see also the official documentation</a>:</p> +<pre><code class="language-yaml">## Reject TURN relaying from/to the following addresses/networks: +blacklist: # This is the default blacklist. + - "127.0.0.0/8" # IPv4 loopback. + - "::1" # IPv6 loopback. + - recommended # Expands to a number of networks recommended to be + # blocked, but includes private networks. Those + # would have to be 'whitelist'ed if eturnal serves + # local clients/peers within such networks. +</code></pre> +<p>To whitelist IP addresses or specific (private) networks, you need to <strong>add</strong> a +whitelist part into the configuration file, e.g.:</p> +<pre><code class="language-yaml">whitelist: + - "192.168.0.0/16" + - "203.0.113.113" + - "2001:db8::/64" +</code></pre> +<p>The more specific, the better.</p> +</li> +<li> +<p>TURNS (TURN via TLS/DTLS)</p> +<p>Also consider supporting TLS/DTLS. To do this, adjust the following settings +in the <code>eturnal.yml</code> configuration file (TLS parts should not be commented anymore):</p> +<pre><code class="language-yaml">listen: + - ip: "::" + port: 3478 + transport: udp + - ip: "::" + port: 3478 + transport: tcp + - ip: "::" + port: 5349 + transport: tls + +## TLS certificate/key files (must be readable by 'eturnal' user!): +tls_crt_file: /etc/eturnal/tls/crt.pem +tls_key_file: /etc/eturnal/tls/key.pem +</code></pre> +<p>In this case, replace the <code>turn:</code> schemes in homeserver's <code>turn_uris</code> settings +with <code>turns:</code>. More is described <a href="../../usage/configuration/config_documentation.html#turn_uris">here</a>.</p> +<p>We recommend that you only try to set up TLS/DTLS once you have set up a +basic installation and got it working.</p> +<p>NB: If your TLS certificate was provided by Let's Encrypt, TLS/DTLS will +not work with any Matrix client that uses Chromium's WebRTC library. This +currently includes Element Android & iOS; for more details, see their +<a href="https://github.com/element-hq/element-android/issues/1533">respective</a> +<a href="https://github.com/element-hq/element-ios/issues/2712">issues</a> as well as the underlying +<a href="https://bugs.chromium.org/p/webrtc/issues/detail?id=11710">WebRTC issue</a>. +Consider using a ZeroSSL certificate for your TURN server as a working alternative.</p> +</li> +<li> +<p>Firewall</p> +<p>Ensure your firewall allows traffic into the TURN server on the ports +you've configured it to listen on (By default: 3478 and 5349 for TURN +traffic (remember to allow both TCP and UDP traffic), and ports 49152-65535 +for the UDP relay.)</p> +</li> +<li> +<p>Reload/ restarting <code>eturnal</code></p> +<p>Changes in the configuration file require <code>eturnal</code> to reload/ restart, this +can be achieved by:</p> +<pre><code class="language-sh">eturnalctl reload +</code></pre> +<p><code>eturnal</code> performs a configuration check before actually reloading/ restarting +and provides hints, if something is not correctly configured.</p> +</li> +</ol> +<h3 id="eturnalctl-opterations-script"><a class="header" href="#eturnalctl-opterations-script">eturnalctl opterations script</a></h3> +<p><code>eturnal</code> offers a handy <a href="https://eturnal.net/documentation/#Operation">operations script</a> +which can be called e.g. to check, whether the service is up, to restart the service, +to query how many active sessions exist, to change logging behaviour and so on.</p> +<p>Hint: If <code>eturnalctl</code> is not part of your <code>$PATH</code>, consider either sym-linking it (e.g. ´ln -s /opt/eturnal/bin/eturnalctl /usr/local/bin/eturnalctl´) or call it from the default <code>eturnal</code> directory directly: e.g. <code>/opt/eturnal/bin/eturnalctl info</code></p> + + </main> + + <nav class="nav-wrapper" aria-label="Page navigation"> + <!-- Mobile navigation buttons --> + <a rel="prev" href="../../setup/turn/coturn.html" class="mobile-nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left"> + <i class="fa fa-angle-left"></i> + </a> + <a rel="next" href="../../delegate.html" class="mobile-nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right"> + <i class="fa fa-angle-right"></i> + </a> + <div style="clear: both"></div> + </nav> + </div> + </div> + + <nav class="nav-wide-wrapper" aria-label="Page navigation"> + <a rel="prev" href="../../setup/turn/coturn.html" class="nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left"> + <i class="fa fa-angle-left"></i> + </a> + <a rel="next" href="../../delegate.html" class="nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right"> + <i class="fa fa-angle-right"></i> + </a> + </nav> + + </div> + + <script type="text/javascript"> + window.playground_copyable = true; + </script> + <script src="../../elasticlunr.min.js" type="text/javascript" charset="utf-8"></script> + <script src="../../mark.min.js" type="text/javascript" charset="utf-8"></script> + <script src="../../searcher.js" type="text/javascript" charset="utf-8"></script> + <script src="../../clipboard.min.js" type="text/javascript" charset="utf-8"></script> + <script src="../../highlight.js" type="text/javascript" charset="utf-8"></script> + <script src="../../book.js" type="text/javascript" charset="utf-8"></script> + + <!-- Custom JS scripts --> + <script type="text/javascript" src="../../docs/website_files/table-of-contents.js"></script> + <script type="text/javascript" src="../../docs/website_files/version-picker.js"></script> + <script type="text/javascript" src="../../docs/website_files/version.js"></script> + </body> +</html> |