Book Image

Learn Wireshark, - Second Edition

By : Lisa Bock
5 (1)
Book Image

Learn Wireshark, - Second Edition

5 (1)
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)
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, then check your answers with those provided in the Assessments appendix:

  1. When creating a display filter, if the background is ____, then you have entered a valid filter.
    1. red
    2. green
    3. yellow
    4. cyan
  2. When creating an expression using the expression builder, you can refine the filter by modifying any of the four variables listed on the right-hand side, which are Relation, _____, Predefined Values, and Range.
    1. Float
    2. Integer
    3. Value
    4. Boolean
  3. To create a capture filter to see only DNS requests and responses, you would enter _____ in the capture filter.
    1. tcp port 53
    2. DNS
    3. dns
    4. udp port 53
  4. If you need to build a filter to zero in on specific field values, you can use the _____ builder.
    1. Expression
    2. Berkeley
    3. EPAN
    4. Dissector
  5. When using either Apply as a Filter or Prepare as Filter, you will see additional choices to create a simple filter or add logical operators. _____ adds a filter that removes the selected field.
    1. ...or...