Even if LL:NG can catch logout <acronymtitle="Uniform Resource Locator">URL</acronym> trough <ahref="../../documentation/2.0/writingrulesand_headers.html#rules"class="wikilink1"title="documentation:2.0:writingrulesand_headers">virtual host rules</a>, you can have the need to forward a logout to other applications, to close their local sessions.
<acronymtitle="LemonLDAP::NG">LL::NG</acronym> has a logout forward mechanism, that will add a step in logout process, to send logout requests (indeed, GET requests on application logout <acronymtitle="Uniform Resource Locator">URL</acronym>) inside hidden iframes.
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<p><divclass="notetip">The logout request will be sent even if the user did not use the application.
Go in Manager, <code>General parameters</code> » <code>Advanced parameters</code> » <code>Logout forward</code> and click on <code>Add a key</code>, then fill:
<p><divclass="noteimportant">The request on logout <acronymtitle="Uniform Resource Locator">URL</acronym> will be sent after user is disconnected, so you should unprotect this <acronymtitle="Uniform Resource Locator">URL</acronym> if it is protected by an <acronymtitle="LemonLDAP::NG">LL::NG</acronym> Handler.