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

Evaluating the different analysis tools

CS offers a solution to share packet captures with your team. Several analysis tools are available via a web interface. In addition to the graphs in CS, there are many other built-in analysis tools. The drop-down menu for the Analysis Tools is located in the upper right-hand part of the screen, where you will find various menu choices, as shown here:

Figure 20.22 – Viewing analysis tools

If any of the options are dimmed, such as Follow SSL and Follow HTTP, as shown in Figure 20.22, that means the tool is not applicable to the current capture.

From the top of the list, you will find many tools to use in your analysis. Let's begin with viewing conversations, ladder diagrams, and filtering the stream.

Following the stream and viewing conversations

Within Wireshark, we have many tools under the Statistics menu that help us make sense of a packet capture. While CS doesn't have as many features, you...