The need for robust access control mechanisms is paramount, especially in Wireless Local Area Network (WLAN)s and Wireless Wide Area Network (WWAN)s. Current authentication systems are vulnerable to device impersonation by rogue devices. Within

Bridge between two ZigBeenetworks Tunneling between two ZigBee networks Gateway between ZigBeeand Ethernet, IP, Mobile, WiFi, PLC etc Address translation (NAT) should be applied.

A Vehicular Ad-Hoc Network (VANET) is a network where vehicles can disseminate information such as traffic conditions, availability of free parking lots or content. In order to fulfill VANET application requirements (Time To Live (TTL), informati