PassportAuthentication Class [IIS 7 and higher]
Configures Microsoft Passport Network authentication in ASP.NET applications.
The following table lists the properties exposed by the PassportAuthentication class.
A read/write string value that specifies the URL of the page to which the request must be redirected if Passport Network authentication is required and the user has not signed on by using Passport Network credentials. The default is "internal".
Instances of this class are contained in the Passport property of the AuthenticationSection class.