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Learn Wireshark

Learn Wireshark

By : Lisa Bock
4.9 (7)
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Learn Wireshark

Learn Wireshark

4.9 (7)
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)
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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

Using CLI tools with Wireshark

Wireshark has several CLI tools that complement its basic functionality and will allow you to perform several tasks, such as editing, splitting, and manipulating packet captures. The following table is a summary of some of the tools available:

Table 2.1 – Wireshark’s built-in CLI tools

All of the CLI tools are baked into Wireshark, however, they are also available to use as a lightweight solution when working work with packet captures.

Next, let’s take a look at tshark, which is a great alternative to use when you need to conserve resources.

Exploring tshark

Part of the Ethereal development process included Terminal Ethereal (Tethereal), which was a CLI tool. Tethereal was later renamed Terminal Wireshark (tshark).

To capture using tshark on a Windows machine, go into the CLI and build a command as the following example shows:

C:\Program Files\Wireshark>tshark -i “ethernet 2”...

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