Check Login session before every action hitting in MVC

Here is checking the session values every time when before hitting to every action.

  protected override void OnActionExecuting(ActionExecutingContext filterContext)

        {

            if (Session["User"] != null)

            {

                base.OnActionExecuting(filterContext);

            }

            else

            {

                TempData["TimeOut"] = "Please login again.";

                filterContext.Result = RedirectToAction("Index", "Home", new { area = "" });

            }

        }