Has anyone ever done a Kerberos authentication? I have a file in which I want to make viewable by certain people witin the company. I have a kerberos authentication placed on a director and when the user clicks on a link, the logon screen (similar to NT LOGON) popsup and prompts for username and password. Since this is an intranet site, everyone who works for the company has a kerberos logon so I have to check it against a database. I don&#039t khow how to write my QUERY since I dont have the password in the database. I will never know the password. How do I code my query?