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<h1>Nextcloud 13 Administration Manual</h1>
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<li><a href="../contents.html">Table of Contents</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../index.html">Introduction</a></li>
<li class="toctree-l1"><a class="reference internal" href="../release_notes.html">Release notes</a></li>
<li class="toctree-l1"><a class="reference internal" href="../installation/index.html">Installation</a></li>
<li class="toctree-l1"><a class="reference internal" href="../configuration_server/index.html">Server configuration</a></li>
<li class="toctree-l1"><a class="reference internal" href="../configuration_user/index.html">User management</a></li>
<li class="toctree-l1 current"><a class="reference internal" href="index.html">File sharing and management</a><ul class="current">
<li class="toctree-l2"><a class="reference internal" href="file_sharing_configuration.html">File Sharing</a></li>
<li class="toctree-l2 current"><a class="current reference internal" href="">Configuring Federation Sharing</a><ul>
<li class="toctree-l3"><a class="reference internal" href="#creating-a-new-federation-share">Creating a new Federation Share</a></li>
<li class="toctree-l3"><a class="reference internal" href="#configuring-trusted-nextcloud-servers">Configuring trusted Nextcloud servers</a></li>
<li class="toctree-l3"><a class="reference internal" href="#creating-federation-shares-via-public-link-share">Creating Federation Shares via public Link Share</a></li>
<li class="toctree-l3"><a class="reference internal" href="#configuration-tips">Configuration tips</a></li>
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<li class="toctree-l2"><a class="reference internal" href="big_file_upload_configuration.html">Uploading big files > 512MB</a></li>
<li class="toctree-l2"><a class="reference internal" href="default_files_configuration.html">Providing default files</a></li>
<li class="toctree-l2"><a class="reference internal" href="external_storage_configuration_gui.html">Configuring External Storage (GUI)</a></li>
<li class="toctree-l2"><a class="reference internal" href="external_storage_configuration.html">Configuring External Storage (configuration file)</a></li>
<li class="toctree-l2"><a class="reference internal" href="external_storage/auth_mechanisms.html">External Storage authentication mechanisms</a></li>
<li class="toctree-l2"><a class="reference internal" href="encryption_configuration.html">Encryption configuration</a></li>
<li class="toctree-l2"><a class="reference internal" href="files_locking_transactional.html">Transactional file locking</a></li>
<li class="toctree-l2"><a class="reference internal" href="previews_configuration.html">Previews configuration</a></li>
<li class="toctree-l2"><a class="reference internal" href="file_versioning.html">Controlling file versions and aging</a></li>
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<div class="section" id="configuring-federation-sharing">
<h1>Configuring Federation Sharing<a class="headerlink" href="#configuring-federation-sharing" title="Permalink to this headline">¶</a></h1>
<p>Federated Cloud Sharing is now managed by the Federation app (9.0+), and is
now called Federation sharing. When you enable the Federation app you can
easily and securely link file shares between Nextcloud servers, in effect
creating a cloud of Nextclouds.</p>
<div class="section" id="creating-a-new-federation-share">
<span id="label-direct-share-link"></span><h2>Creating a new Federation Share<a class="headerlink" href="#creating-a-new-federation-share" title="Permalink to this headline">¶</a></h2>
<p>Follow these steps to create a new Federation share between two Nextcloud
servers. This requires no action by the user on the remote server; all it takes
is a few steps on the originating server.</p>
<ol class="arabic simple">
<li>Enable the Federation app.</li>
<li>Go to your Nextcloud Admin page and scroll to the Sharing
section. Verify that <strong>Allow users on this server to send shares to other
servers</strong> and <strong>Allow users on this server to receive shares from other
servers</strong> are enabled.</li>
<li>Now go to the Federation
section. By default, <strong>Add server automatically once a federated share was
created successfully</strong> is checked. The Federation app supports creating a
list of trusted Nextcloud servers, which allows the trusted servers to
exchange user directories and auto-complete the names of external users when
you create shares. If you do not want this enabled, then un-check it.</li>
</ol>
<div class="figure">
<img alt="../_images/federation-0.png" src="../_images/federation-0.png" />
</div>
<ol class="arabic simple" start="4">
<li>Now go to your Files page and select a folder to share. Click the share
icon, and then enter the username and URL of the user on the remote Nextcloud
server. In this example, that is <code class="docutils literal"><span class="pre">freda@https://example.com/nextcloud</span></code>.
When Nextcloud verifies the link, it displays it with the <strong>(remote)</strong> label.
Click on this label to establish the link.</li>
</ol>
<div class="figure">
<img alt="../_images/federation-2.png" src="../_images/federation-2.png" />
</div>
<ol class="arabic simple" start="5">
<li>When the link is successfully completed, you have a single share option,
and that is <strong>can edit</strong>.</li>
</ol>
<div class="figure">
<img alt="../_images/federation-3.png" src="../_images/federation-3.png" />
</div>
<p>You may disconnect the share at any time by clicking the trash can icon.</p>
</div>
<div class="section" id="configuring-trusted-nextcloud-servers">
<h2>Configuring trusted Nextcloud servers<a class="headerlink" href="#configuring-trusted-nextcloud-servers" title="Permalink to this headline">¶</a></h2>
<p>You may create a list of trusted Nextcloud servers for Federation sharing. This
allows your linked Nextcloud servers to share user directories, and to auto-fill
user names in share dialogs. If <strong>Add server automatically once a federated
share was created successfully</strong> is enabled on your Admin page, servers will be
automatically added to your trusted list when you create new Federation shares.</p>
<p>You may also enter Nextcloud server URLs in the <strong>Add Nextcloud Server</strong> field.
The yellow light indicates a successful connection, with no user names
exchanged. The green light indicates a successful connection with user names
exchanged. A red light means the connection failed.</p>
<div class="figure">
<img alt="../_images/federation-1.png" src="../_images/federation-1.png" />
</div>
</div>
<div class="section" id="creating-federation-shares-via-public-link-share">
<span id="label-public-link-share"></span><h2>Creating Federation Shares via public Link Share<a class="headerlink" href="#creating-federation-shares-via-public-link-share" title="Permalink to this headline">¶</a></h2>
<p>Check the <code class="docutils literal"><span class="pre">Share</span> <span class="pre">Link</span></code> checkbox to expose more sharing options (which are
described more fully in <a class="reference internal" href="file_sharing_configuration.html"><em>File Sharing</em></a>). You may create a
Federation share by allowing Nextcloud to create a public link for you, and then
email it to the person you want to create the share with.</p>
<div class="figure">
<img alt="../_images/create_public_share-6.png" src="../_images/create_public_share-6.png" />
</div>
<p>You may optionally set a password and expiration date on it. When your recipient
receives your email they must click the link, or copy it to a Web
browser. They will see a page displaying a thumbnail of the file, with a button
to <strong>Add to your Nextcloud</strong>.</p>
<div class="figure">
<img alt="../_images/create_public_share-8.png" src="../_images/create_public_share-8.png" />
</div>
<p>Your recipient should click the <strong>Add to your Nextcloud</strong> button. On the next
screen your recipient needs to enter the URL to their Nextcloud
server, and then press the return key.</p>
<div class="figure">
<img alt="../_images/create_public_share-9.png" src="../_images/create_public_share-9.png" />
</div>
<p>Your recipient has to take one more step, and that is to confirm creating the
federated cloud share link by clicking the <strong>Add remote share</strong> button.</p>
<div class="figure">
<img alt="../_images/create_public_share-10.png" src="../_images/create_public_share-10.png" />
</div>
<p>Un-check the <code class="docutils literal"><span class="pre">Share</span> <span class="pre">Link</span></code> checkbox to disable any federated cloud share
created this way.</p>
</div>
<div class="section" id="configuration-tips">
<h2>Configuration tips<a class="headerlink" href="#configuration-tips" title="Permalink to this headline">¶</a></h2>
<p>The Sharing section on your Admin page allows you to control how your users
manage federated cloud shares:</p>
<ul class="simple">
<li>Check <code class="docutils literal"><span class="pre">Enforce</span> <span class="pre">password</span> <span class="pre">protection</span></code> to require passwords on link shares.</li>
<li>Check <code class="docutils literal"><span class="pre">Set</span> <span class="pre">default</span> <span class="pre">expiration</span> <span class="pre">date</span></code> to require an expiration date on link
shares.</li>
<li>Check <code class="docutils literal"><span class="pre">Allow</span> <span class="pre">public</span> <span class="pre">uploads</span></code> to allow two-way file sharing.</li>
</ul>
<p>Your Apache Web server must have <code class="docutils literal"><span class="pre">mod_rewrite</span></code> enabled, and you must have
<code class="docutils literal"><span class="pre">trusted_domains</span></code> correctly configured in <code class="docutils literal"><span class="pre">config.php</span></code> to allow external
connections (see <a class="reference internal" href="../installation/installation_wizard.html"><em>Installation wizard</em></a>). Consider also
enabling SSL to encrypt all traffic between your servers .</p>
<p>Your Nextcloud server creates the share link from the URL that you used to log
into the server, so make sure that you log into your server using a URL that is
accessible to your users. For example, if you log in via its LAN IP address,
such as <code class="docutils literal"><span class="pre">http://192.168.10.50</span></code>, then your share URL will be something like
<code class="docutils literal"><span class="pre">http://192.168.10.50/nextcloud/index.php/s/jWfCfTVztGlWTJe</span></code>, which is not
accessible outside of your LAN. This also applies to using the server name; for
access outside of your LAN you need to use a fully-qualified domain name such as
<code class="docutils literal"><span class="pre">http://myserver.example.com</span></code>, rather than <code class="docutils literal"><span class="pre">http://myserver</span></code>.</p>
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