Scope of the project is the implementation of a Virtual Private Network (VPN) of a thousand mobile units of the Greek Police, which will communicate with a safe encrypted connection with the Headquarters Building of the Greek Police (GPH). This implementation will be completed through a closed and secure network. The GPH building will be the focal point for interconnecting mobile units with applications operating in central information systems. The Police officer will handle the appropriate portable computer with wireless (HSDPA/3G/GPRS) access and will be linked to databases, at the GPH building, which will have fixed access via a symmetrical line at the VPN network in question. Therefore, it will be able to utilize critical applications and take advantage of new opportunities given by such a network architecture.