Use the Security tab of the Web Site Administration Tool to manage rules for securing specific resources in the Web application. ...

Use the Security tab of the Web Site Administration Tool to manage rules for securing specific resources in the Web application. ASP.NET uses a security system that lets you restrict access to specific user accounts or the roles to which the user accounts belong. With the Security tab, you manage user accounts, roles, and access rules for the Web site. Before using the Security tab for the first time, use the Security Setup Wizard to configure basic security settings for the Web site.