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 can see the many aspects of ICMP, which is a significant protocol in the TCP/IP suite. We looked at the purpose of ICMP, a method to communicate issues that prevent data delivery. We compared ICMP and ICMPv6, which have similar functions, but we now understand that ICMPv6 has a bigger role. So that you can use this protocol while troubleshooting, we discovered ICMP messages that communicate with hosts to report on transmission errors. In addition, we saw how query messages can be used to attempt to obtain information from a host.

To better understand the ICMP type and code values, we examined how they work when communicating information. In addition, we learned that there are some ICMP types that you will rarely see as they are now deprecated and/or not supported. By now, you should recognize that ICMP is a powerful protocol that helps to move traffic on a network, but can also be used in malicious ways. As a result, you should configure firewall rules that...