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Understanding Authentication
Authentication is the process of verifying the identity of a user or system. In web applications, authentication is the mechanism by which a user is identified and verified before granting access to the application. It involves collecting credentials such as username and password, validating them, and creating a session for the authenticated user.
Web applications use different types of authentication mechanisms such as forms-based authentication, Windows-based authentication, and custom authentication. Forms-based authentication is the most common authentication mechanism used in web applications. In forms-based authentication, the user is prompted to enter their credentials in a login form, and the application verifies the entered credentials before granting access to the application.
Authentication is a critical part of web application security as it ensures that only authorized users can access the application and its resources.
ASP.NET provides built-in authentication features that allow developers to easily implement authentication in their web applications. ASP.NET supports several authentication modes, including Windows authentication, Forms authentication, and Passport authentication.
Windows authentication uses the credentials of the user who is currently logged on to the Windows operating system to authenticate the user. Forms authentication uses a custom login page and a database to store user credentials. Passport authentication is a centralized authentication service provided by Microsoft that allows users to use a single set of credentials to access multiple web applications. In addition to authentication, ASP.NET also provides membership features, such as roles, profiles, and authorization. Roles allow developers to define roles for users and grant access to different resources based on the user’s role. Profiles allow developers to store user-specific information, such as user preferences, in a database. Authorization allows developers to control access to resources based on the user’s role.
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