title: Where does the user information in Server Variables come from in ASP.NET?
body: <p>In the Server Variables collection I note there are:</p>
  
  <pre><code>REMOTE_USER
  LOGON_USER
  AUTH_USER
  </code></pre>
  
  <p>Do these come from the decypted ".ASPXFORMSAUTH" cookie?</p>
  
  <p>EDIT:</p>
  
  <p>Think I am correct:</p>
  
  <pre><code>        HttpCookie authCookie = Request.Cookies[FormsAuthentication.FormsCookieName];//.ASPXAUTH
          FormsAuthenticationTicket authTicket = FormsAuthentication.Decrypt(authCookie.Value);
  </code></pre>
  
  <p>Reference : <a href="https://stackoverflow.com/questions/423467/what-is-aspxauth-cookie">what is ASPXAUTH cookie?</a></p>