User to query ad

[mike.drewery]

I am trying to work on an app someone else wrote. They used a user to query AD. They made this user a domain user. The web page uses authentication and since AD allows anyone to read it I would like to disable the user. Here is the code

DirectoryEntry de = new DirectoryEntry("LDAP://LABS.PPDI.LOCAL", "Domain\\FaqUser", "password");

How do I get this to use the credentials of the user that is authenticated in to the web page?

Thanks for your input

Mike