Internet relate to the ISO seven-layer model see, for example, chapter 11 of the text ???Internetworking with TCP/IP??? by Douglas E. Comer (volume 1, fourth edition, ISBN 0201633469) and Chapter 1 of the text ???TCP/IP Illustrated??? by W. Richard Stevens (volume 1, ISBN 0130183806). [0005] An example of a network device is a computer attached to a Local Area Network (LAN), wherein the network de