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

Preface

In the early 2000s, a coworker introduced me to Ethereal, the precursor to Wireshark. I remember looking at the screen as my laptop gobbled up traffic and thinking, "I don't know what this is, but I want to know!" Over the next few years, I immersed myself in learning as much as possible about packet analysis using Wireshark. I attended training, watched videos, and read books that helped me compile and curate my knowledge and respect for what the packets tell us.

I have taught network and security courses and presented at conferences about the many benefits of using Wireshark. In this second edition of Learn Wireshark, I want to share my knowledge with you. Each chapter has multiple opportunities for a hands-on approach. Using the examples, you will make sense of the data and understand what the packets are telling you. I'll outline how to conduct a detailed search, follow the data stream, and identify endpoints so that you can troubleshoot latency issues and actively recognize network attacks. Join me on this journey, and you'll soon realize that the ability to understand what's happening on the network is a superpower!