synapse/v1.42/usage/configuration/user_authentication/index.html

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<h1 id="user-authentication"><a class="header" href="#user-authentication">User Authentication</a></h1>
<p>Synapse supports multiple methods of authenticating users, either out-of-the-box or through custom pluggable
authentication modules.</p>
<p>Included in Synapse is support for authenticating users via:</p>
<ul>
<li>A username and password.</li>
<li>An email address and password.</li>
<li>Single Sign-On through the SAML, Open ID Connect or CAS protocols.</li>
<li>JSON Web Tokens.</li>
<li>An administrator's shared secret.</li>
</ul>
<p>Synapse can additionally be extended to support custom authentication schemes through optional &quot;password auth provider&quot;
modules.</p>
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