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Learn Wireshark

Learn Wireshark

By : Lisa Bock
4.9 (7)
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Learn Wireshark

Learn Wireshark

4.9 (7)
By: Lisa Bock

Overview of this book

Wireshark is a popular and powerful packet analysis tool that helps network administrators investigate latency issues and potential attacks. Over the years, there have been many enhancements to Wireshark’s functionality. This book will guide you through essential features so you can capture, display, and filter data with ease. In addition to this, you’ll gain valuable tips on lesser-known configuration options, which will allow you to complete your analysis in an environment customized to suit your needs. This updated second edition of Learn Wireshark starts by outlining the benefits of traffic analysis. You’ll discover the process of installing Wireshark and become more familiar with the interface. Next, you’ll focus on the Internet Suite and then explore deep packet analysis of common protocols such as DNS, DHCP, HTTP, and ARP. The book also guides you through working with the expert system to detect network latency issues, create I/O and stream graphs, subset traffic, and save and export captures. Finally, you’ll understand how to share captures using CloudShark, a browser-based solution for analyzing packet captures. By the end of this Wireshark book, you’ll have the skills and hands-on experience you need to conduct deep packet analysis of common protocols and network troubleshooting as well as identify security issues.
Table of Contents (28 chapters)
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1
Part 1 Traffic Capture Overview
6
Part 2 Getting Started with Wireshark
11
Part 3 The Internet Suite TCP/IP
16
Part 4 Deep Packet Analysis of Common Protocols
21
Part 5 Working with Packet Captures

Questions

Now, it's time to check your knowledge. Select the best response to the following questions and then check your answers, which can be found in the Assessment appendix:

  1. To view a visual of a tiered list of protocols contained in the file, go to Statistics | _____.
    1. Capture File Properties
    2. Resolved Addresses
    3. Protocol Hierarchy
    4. Endpoints
  2. Wireshark has several graphs you can run to visualize traffic. One type of graph you can use is a _____, which shows data exchanged between hosts.
    1. BACnet graph
    2. Flow graph
    3. BOOTP graph
    4. Display graph
  3. To view a graph showing the traffic flowing in both directions use a(n) _____.
    1. I/O graph
    2. TCP stream graph
    3. BOOTP graph
    4. Display graph
  4. Once you have created an I/O graph, Wireshark will save the results in your _____, which can be exported so that you can share the graph with a coworker.
    1. Protocol chain
    2. Stream repository
    3. Boot file
    4. Configuration profile
  5. If, when viewing a graph of sequence numbers over time, you need to see any SACKs within...

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