Sniffing Around Hubs
Sniffing on a network that has hubs installed is a dream for any packet analyst. As you learned in Chapter 1, traffic sent through a hub goes through every port connected to that hub. Therefore, to analyze the traffic running through a computer connected to a hub, all you need to do is connect a packet sniffer to an empty port on the hub. You will be able to see all communication to and from that computer, as well as all communication between any other devices plugged into that hub. As illustrated in Figure 2-2, your visibility window is limitless when your sniffer is connected to a hub-based network.
Figure 2-2. Sniffing on ...
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