Kerberos double-hop in ASP.NET 4.0 & SQL2008R2

Question

I have an ASP.NET 4.0 application within which I need to forward the authentication to the database. For the purposes of this request for assistance, lets call the web serve

Answer 1

Checklist for Double Hop issues {IIS and SQL Server}

http://blogs.technet.com/b/taraj/archive/2009/01/29/checklist-for-double-hop-issues-iis-and-sql-server.aspx

http://www.phishthis.com/2009/10/24/how-to-configure-ad-sql-and-iis-for-two-hop-kerberos-authentication-2/

http://support.microsoft.com/kb/810572

IIS to SQL Server kerberos auth issues