The default is basic auth, which has no intrinsic notion of logging out. If you install the CookieCrumbler product, that will let you use cookie auth and you will be able to log out users by expiring their cookies.
How is then Zope able to log me out of its management interface? I checked the frame source where the logout menu is: <form action="/" method="POST" target="manage_main"> <span class="std-text">Logged in as <strong>admin</strong></span> <select class="form-element" name=":action" onChange="window.parent.manage_main.location.href='/'+this.options[this.selectedIndex].value"> <option value="zope_quick_start">Zope Quick Start</option> <option value="manage_zmi_prefs">Set Preferences</option> <option value="manage_zmi_logout">Logout</option> </select> <input class="form-element" type="submit" name="submit" value=" Go " /> Is there a way to use the same facility from my scripts? It seems to me that logging out a user is a basic operation that should be supported by Zope 'out of the box', without the need of additional products. Just wondering... --Borislav