I am trying to setup metalink authentication with SSO on our portal. I have tried to use the following URL as the Login url. It doesn't work. I have set it up as Basic Authentication. AS per SSO admin guide, I have left the user name and password fields empty. Please post a reply if anyone know how to do this.
be aware that external authentication, using basic authentication, is no more supported bye IE because of recent security patch (832894 security update around June-2004).
This perhaps the reason why your prototype doesn't work.
There is a workaround which consists to modify a registry attribute: http://support.microsoft.com/default.aspx?scid=kb;en-us;834489 for each client browser.
Cf detailed note 263302.1 on metalink.