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

Summary

By now, you have a better understanding of ARP, how it works, and why it is important for delivering data. So that you have an appreciation of what takes place during an ARP request and reply, we stepped through the process, and then reviewed the ARP headers and field values. We also discussed the fact that, in addition to a standard ARP, you may encounter different types of ARP while analyzing traffic in Wireshark, such as a gratuitous ARP or InARP. Finally, so that you are aware that ARP may be used in a malicious way, we covered some of the attacks, along with a few of the tools used to launch an ARP attack. We then summarized some of the methods you should employ to defend against various types of attacks.

The next chapter will look at how Wireshark can help identify and troubleshoot network latency issues. You'll be able to appreciate the importance of time values on a network and discover several ways to display time. In addition, you'll see the...