Web applications in ASP.NET are typically secured in one of two ways, Windows authentication and Forms authentication. Each method stores users differently and involves a different approach for logins.
- Users are operating system users on the local Windows server or on a domain. Roles are Windows groups.
- Users log into the Web application using a non-customizable pop-up login dialog box.
- For instructions, see the Microsoft article: How To: Use Windows Authentication in ASP.NET 2.0.