title: How can the browser know the current AD user ASP.NET
body: <p>Is it possible for the browser to know the currently logged in AD user without explicitly logging in? I want the code in the server to execute with the same permissions as the user in the browser. Is that possible or do I have to require the user to explicitly log on?</p>
  
  <p>Context: ASP.NET, mostly IE 7, IIS 7.</p>
  
  <p>Thanks.</p>