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Practical Packet Analysis, 2nd Edition by Chris Sanders

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Wireshark Fundamentals

Once you’ve successfully installed Wireshark on your system, you can begin to familiarize yourself with it. Now you finally get to open your fully functioning packet sniffer and see . . . absolutely nothing!

Okay, so Wireshark isn’t very interesting when you first open it. In order for things to really get exciting, you need to get some data.

Your First Packet Capture

To get packet data into Wireshark, you’ll perform your first packet capture. You may be thinking, “How am I going to capture packets when nothing is wrong on the network?”

First, there is always something wrong on the network. If you don’t believe me, then go ahead and send an email to all of your network users and let them know that everything is working perfectly. ...

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