ASP.NET External Login Provider

Question

I currently have a web app in ASP.NET MVC using ASP.NET Identity for authentication (user/password).

Now i want to shift the authentication to an external service . this external service only returns the username (indicating that is authenticated).

How can i tell my web app (and to ASP.NET Identity) that the user is logged in without logging it again?

Thanks!

Answer 1

Visual Studio 2013 and ASP.NET 4.5.1 make integration with external authentication services easier for developers by providing built-in integration for the authentication services such as Facebook, Google, Microsoft Accounts and Twitter . Otherwise your web application can enable users to log in using OAuth 2.0 with credentials from an external authentication.