What I want to realise: - web-application with zope user login - username, password stored in an Interbase database - session tracking I've been searching for a while how to solve the login problem. Could you give me an answer to the following questions? 1) Is it possible to use the normal acl_user folder together the Interbase database? (How??) 2) Situation with ZODB: given is a web-page where a user can decide on one of two web-apps. He than has to login (zope user) using a web form. When the user logs out and than clicks the "back" button of the browser a few times he comes back to the first page. When the user now decides on the other web-app he is automatically logged in because the username and password are the same for both apps. I would like to force the user to login again. Do you have an idea? 3) Which login mechanism is used at zope.org? (ZODB??) Thanks for any help? Christian