<h3>User ID Settings<a class="headerlink" href="#user-id-settings" title="Permalink to this headline">     </a></h3>
<p>The User ID Mapping and Anonymous User settings determine how user identifiers (UIDs) are sent to the core filer.</p>
<p>For security reasons, you might want to change the UID on requests to the core filer export. The most common reason is to prevent a user with special privileges on the client system (for example, the root user) from gaining the same privileges on the back-end system.</p>