Best Enterprise Solution - By thorough Understanding of the Requirements, Proper Architecture, Implementation using Hi Tech. Optimized solution
These links help you to understand and implement Windows Authentication in ASP.NET Application using Microsoft Internet Information Services (IIS) ...
http://msdn2.microsoft.com/en-us/library/ms998372.aspx
http://www.microsoft.com/technet/prodtechnol/WindowsServer2003/Library/IIS/15225777-8b91-4e7a-a49d-f4b4ad0f1b3a.mspx?mfr=true
http://support.microsoft.com/kb/323176
http://msdn2.microsoft.com/en-us/library/532aee0e(vs.71).aspx
http://msdn2.microsoft.com/en-us/library/8d82143t(vs.71).aspx
http://msdn.microsoft.com/msdnmag/issues/02/04/ASPSec/default.aspx
http://weblogs.asp.net/scottgu/archive/2006/07/12/Recipe_3A00_-Enabling-Windows-Authentication-within-an-Intranet-ASP.NET-Web-application.aspx
http://www.codeproject.com/KB/aspnet/WindowsSecuritynASPNet.aspx
http://samples.gotdotnet.com/quickstart/aspplus/doc/windowsauth.aspx
http://msdn.microsoft.com/msdnmag/issues/02/04/ASPSec/