Windows Authentication to Access SQL Server Through a ASP.NET Web Application || Configuring SQL Server || Configuring IIS: || Configuring the ASP.NET Web Application || Creating Connection Strings

We need to configure the following four different areas to access Windows integrated security:

1.     SQL Server

2.     IIS Web Server

3.     ASP.Net web application

4.     ConnectionString

SQL Server be running on same IIS machine. If both are on different machines, we should go for analternative security model such as Forms authentication, which is not covered in this article. The access users must be in the same domain where the Web server is running.
If you want know about below then click on the below link.

Configuring SQL Server
Configuring IIS:
Configuring the ASP.NET Web Application

http://aspdotnet-roja.blogspot.in/2012/07/windows-authentication-to-access-sql.html