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Sybex CEH Certified Ethical Hacker Version 8 Study Guide

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Using a Sniffer 223<br />

3. Select the TCP portion of the packet in the middle pane.<br />

4. Now take this one step further and apply your knowledge of hexadecimal while taking<br />

advantage of Wireshark’s packet breakdown display. In the following graphic, I have<br />

expanded the IP portion of the packet. Looking at the bottom pane of the Wireshark<br />

display, notice that the hex number highlighted (c0 a8 01 02) is the same as the decimal<br />

highlighted source IP (192.168.1.2) in the middle pane. Pretty cool, huh? So what you’ve<br />

accomplished here is to relate something fairly clear cut—a source IP address—to<br />

something not so clear—the hex guts of a packet.

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