authorize.cs

[Authorize] 
public class AccountController : Controller
{
    public AccountController () { . . . }

    [AllowAnonymous]
    public ActionResult Register() { . . . }
    public ActionResult Manage() { . . . }
    public ActionResult LogOff() { . . . }
} 
//exemple tiré de https://msdn.microsoft.com/en-us/library/system.web.mvc.authorizeattribute%28v=vs.118%29.aspx#exampleToggle