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

In this chapter, we took a look at CS, a tool that allows you to view and analyze packet captures in a browser. We learned some of the ways CS provides the ability to examine captures, many of which are similar to Wireshark. We started by discovering CS and learned ways to modify the preferences, work with captures, and create customized profiles. We then evaluated ways to filter a capture to show only a specific type of traffic, as well as creating a variety of graphs.

In addition, we learned that CS has a rich variety of analysis tools. Tools include Follow Stream, Network Endpoints, GeoIP World Map, Packet Lengths, DNS Activity, VoIP Calls, and Wireless Networks, with methods to assess threats. We discovered that, in general, there are many resources for packet captures that you can visit and download a capture file to study and improve your packet analysis skills. We then took a look at PacketLife.net, which has an online repository of capture files for download, or...