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Mastering Wireshark

Mastering Wireshark

By : Mishra
3.5 (2)
Buy this Book
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Mastering Wireshark

Mastering Wireshark

3.5 (2)
By: Mishra
Buy this Book

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 (11 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
Lock Free Chapter
1
1. Welcome to the World of Packet Analysis with Wireshark
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1. Welcome to the World of Packet Analysis with Wireshark
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Introduction to Wireshark
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A brief overview of the TCP/IP model
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The layers in the TCP/IP model
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An introduction to packet analysis with Wireshark
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Capturing methodologies
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Summary
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Practice questions
2
2. Filtering Our Way in Wireshark
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2. Filtering Our Way in Wireshark
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An introduction to filters
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Capture filters
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Display filters
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Searching for packets using the Find dialog
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Create new Wireshark profiles
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Summary
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Practice questions
3
3. Mastering the Advanced Features of Wireshark
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3. Mastering the Advanced Features of Wireshark
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The Statistics menu
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Conversations
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Endpoints
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Working with IO, Flow, and TCP stream graphs
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IO graphs
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Flow graphs
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TCP stream graphs
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Follow TCP streams
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Expert Infos
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Command Line-fu
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Summary
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Exercise
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4. Inspecting Application Layer Protocols
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4. Inspecting Application Layer Protocols
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Domain name system
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File transfer protocol
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Hyper Text Transfer Protocol
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Simple Mail Transfer Protocol
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Summary
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Practice questions:
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5. Analyzing Transport Layer Protocols
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5. Analyzing Transport Layer Protocols
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The transmission control protocol
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The User Datagram Protocol
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Summary
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Practice questions
6
6. Analyzing Traffic in Thin Air
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6. Analyzing Traffic in Thin Air
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Understanding IEEE 802.11
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Usual and unusual WEP – open/shared key communication
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Decrypting WEP and WPA traffic
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Summary
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Practice questions
7
7. Network Security Analysis
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7. Network Security Analysis
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Information gathering
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ARP poisoning
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Analyzing brute force attacks
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Summary
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Practice questions
8
8. Troubleshooting
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8. Troubleshooting
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Recovery features
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Summary
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Practice questions
9
9. Introduction to Wireshark v2
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9. Introduction to Wireshark v2
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The intelligent scroll bar
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Translation
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Graph improvements
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TCP streams
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USBPcap
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Summary
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Practice questions
10
Index
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Index

Graph improvements

This is something that you will be really pleased to know about. Yes, Wireshark has made quite significant changes that will make your analytical tasks more comfortable. To understand the difference, the best option will be to go through an example.

We will try to create an IO graph in order to witness the changes that the new version has. I am using a capture file from the previous chapter, which has mixed packet types and mostly contains VoIP traffic. The sole purpose of this exercise is to see how graphs can be of better assistance in version 2 of Wireshark. Follow these steps to create an IO graph in Wireshark version 2.0:

  1. Capture the normal traffic from your network or open any previously captured trace file that you have.
  2. Click on IO Graph under Statistics. Once you do that, you will be directly presented with a graph without any further hassle:
    Graph improvements

    Figure 9.11: The IO graph

  3. Now, if you want to modify and configure the graph, then you can use various configurable options...
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Mastering Wireshark
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