You're reading from Learn Wireshark A definitive guide to expertly analyzing protocols and troubleshooting networks using Wireshark

Product type Paperback

Published in Aug 2022

Publisher Packt

ISBN-13 9781803231679

Length 606 pages

Edition 2nd Edition

Languages

TCP

Tools

Wireshark

Concepts

Networking

Author (1):

Lisa Bock

View More author details

Table of Contents (28) Chapters

Preface

1. Part 1 Traffic Capture Overview

2. Chapter 1: Appreciating Traffic Analysis FREE CHAPTER

3. Chapter 2: Using Wireshark

4. Chapter 3: Installing Wireshark

5. Chapter 4: Exploring the Wireshark Interface

6. Part 2 Getting Started with Wireshark

7. Chapter 5: Tapping into the Data Stream

8. Chapter 6: Personalizing the Interface

9. Chapter 7: Using Display and Capture Filters

10. Chapter 8: Outlining the OSI Model

11. Part 3 The Internet Suite TCP/IP

12. Chapter 9: Decoding TCP and UDP

13. Chapter 10: Managing TCP Connections

14. Chapter 11: Analyzing IPv4 and IPv6

15. Chapter 12: Discovering ICMP

16. Part 4 Deep Packet Analysis of Common Protocols

17. Chapter 13: Diving into DNS

18. Chapter 14: Examining DHCP

19. Chapter 15: Decoding HTTP

20. Chapter 16: Understanding ARP

21. Part 5 Working with Packet Captures

22. Chapter 17: Determining Network Latency Issues

23. Chapter 18: Subsetting, Saving, and Exporting Captures

24. Chapter 19: Discovering I/O and Stream Graphs

25. Chapter 20: Using CloudShark for Packet Analysis

26. Assessments

27. Other Books You May Enjoy

Dissecting ICMP and ICMPv6

Although IPv4 and IPv6 are both responsible for routing and addressing data, the two protocols have a number of differences. As a result, there are two versions of ICMP.

In the next section, we'll explore ICMP alongside ICMPv6 so that you understand some of the basic roles and functions in reporting network issues.

Let's start with ICMP, which is used with IPv4.

Reviewing ICMP

ICMP is used alongside IPv4 to communicate network issues that prevent data from being delivered. ICMP error and query messages can alert end systems when there are issues with connectivity and can also obtain diagnostic information from intermediary systems, such as the round-trip time.

As powerful as ICMP is, it cannot make IP a reliable protocol; it only assists in data delivery by providing error messages and information. There are times when the causes of delays in data transmission are outside of the messages that...