Security Basics and ASP.NET Support; An Overview of Forms Authentication; Forms Authentication Configuration and Advanced Topics;
Creating the Membership Schema in SQL ServerCreating User Accounts; Validating User Credentials Against the Membership Store; User-Based Authorization;
Storing Additional User Information; Creating and Managing Roles; Assigning Roles to Users; Role-Based Authorization; Building an Interface to Select One User Account from Many
Recovering and Changing Passwords; Unlocking and Approving User Accounts;
http://www.asp.net/web-forms/security