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Practical_modern_SCADA_protocols_-_dnp3,_60870-5_and_Related_Systems

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Appendix D: <strong>Practical</strong>s 451<br />

(This is request (Ping) from the even numbered computer.)<br />

The screen should change to:<br />

Note: You may have to rearrange the windows within the PackBoy window for optimum<br />

viewing.<br />

The center section defines in English what is in packet number 1. It says that there are..<br />

14 bytes in the header of the packet<br />

28 bytes in the ARP header (data area)<br />

0 bytes of padding<br />

The bottom section is the hexadecimal <strong>and</strong> ASCII value of the information in the packet.<br />

Click on the ARP header. The screen will change to

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