On Thu, 2003-06-26 at 13:53, Jianping Zhu wrote: > Can somebody give me a > hint to settle this problem? Yes: Read the documentation. Once again, it is available at: http://www.zope.org/Documentation/Books/ZopeBook/2_6Edition/Security.stx I think you'll find help a lot more forthcoming once you've done that. FWIW, Dylan