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

Chapter 11: Analyzing IPv4 and IPv6

Anyone involved in networking will need to understand the Internet Protocol (IP), a network layer protocol that is responsible for delivering data over a network. In this chapter, we'll begin by reviewing the network layer, and more specifically, the purpose of IP as a predominant network protocol. We'll then take a closer look at IPv4 and IPv6, which are responsible for two key roles: addressing and routing data. Wireshark provides exceptional support for both IPv4 and IPv6. To strengthen your analytical skills, we'll start with a thorough overview of both versions and examine the header format of each protocol.

You'll begin to understand how the field values in each of the versions compare and contrast, and be able to recognize the significance of each of the fields. Since addressing is an important concept, we'll examine the use of special and private IPv4 addressing. In addition, we'll outline the different address...