Book Image

Mastering Wireshark

Book Image

Mastering Wireshark

Overview of this book

Wireshark is a popular and powerful tool used to analyze the amount of bits and bytes that are flowing through a network. Wireshark deals with the second to seventh layer of network protocols, and the analysis made is presented in a human readable form. Mastering Wireshark will help you raise your knowledge to an expert level. At the start of the book, you will be taught how to install Wireshark, and will be introduced to its interface so you understand all its functionalities. Moving forward, you will discover different ways to create and use capture and display filters. Halfway through the book, you’ll be mastering the features of Wireshark, analyzing different layers of the network protocol, looking for any anomalies. As you reach to the end of the book, you will be taught how to use Wireshark for network security analysis and configure it for troubleshooting purposes.
Table of Contents (16 chapters)
Mastering Wireshark
About the Author
About the Reviewer

Searching for packets using the Find dialog

If you want to find a packet for a particular criterion, you can use the Find dialog. It has a couple of useful search techniques that can be applied easily and effectively on an already captured file or on a live running capture. You can access the Find utility by navigating to Edit | Find packets or using the shortcut Ctrl + F.

Figure 2.15: The Find Packet dialog

Let's see some more configurable options in it:

  • The display filter: After capturing the traffic, while analyzing whether you just want to see some specific packets based on a certain IP /Port/ Protocol, those packets that meet a certain criteria will be displayed in the list pane, for example:

    • The ip.addr == (based on an IP address)

    • The port 8080 (based on a port number)

    • http (based on a protocol)

  • The Hex value: If you have the hex value for a certain packet that you are looking for, then this option can be selected. Just write the physical address separated by colons, for example...