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

Discovering shortcuts and handy filters

Over the years, Wireshark has evolved. Now more than ever, it's very easy to create a display filter on the fly while analyzing by simply right-clicking and choosing to apply or prepare as filter.

In this section, let's take a look at the many ways in which we can apply a filter, without going through the complicated exercise of launching the expression builder. In addition, we'll see some handy filters that you can use to get right down to the issue. We'll start with an overview of the many shortcuts to use when filtering traffic.

Embracing filter shortcuts

While working with Wireshark in the Packet Details panel, you might want to filter on a specific IP address or a particular port number. Once you identify the item of interest, you can right-click on it and you will see several filter shortcuts, as shown here:

Figure 7.21 – Right-click to view filter shortcuts

Although there...