Custom AuthorizeAttribute with custom authentication

Question

I am using ASP.NET MVC 4 Web application as a front-end for some WCF services. All the user log in/log out and session control is done on the back-end. MVC app should only

Answer 1

Not totally sure I get it but if you create an Custom Authorization Filter that inherits from System.Web.MVC.Authorize attribute like this.

    public class CustomAuthorize : AuthorizeAttribute
    {
    public override void OnAuthorization(AuthorizationContext filterContext)
    {
        if (CookieIsValid(filterContext.Request.Cookies["cookieyouwant"])
        {
             filterContext.Result = new RedirectResult("DestUrl");
        }
        else
        {
            filterContext.Result = new RedirectResult("/Home/Index/NeedsLogin");
        }
    }
}

And then decorate your Methods that need to employ this Authorization will that do the trick?