H-8. EtherealFinally, we come to Ethereal. This tool is used to capture network packets. It runs on both Unix and Windows. It is intended to run as a GUI application. Figure H-1 shows the packet capture window. Figure H-1. Ethereal packet capture windowIt displays such information as source and destination IP addresses and ports, protocols, and payload data. Each level of the OSI model is represented here, and you can drill down into each layer for further inspection. To learn more about Ethereal, visit http://www.ethereal.com. |