I. Introduction
In home environment, many appliances are rapidly becoming computationally enabled, equipped with different communications protocols, and therefore connected to home networks. For example, there are UPnP (Universal Plug and Play)[1], Jini[2], and HAVi[3] middlewares for connecting audio and video devices while protocols such as Konnex[4], LonWorks[5], or X10[6] are adapted to appliances for security and home automation.