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

Exploring the File menu

When working with the Wireshark interface, File is the go-to menu because it has all of the tasks commonly associated with working with a file, as shown in the following screenshot:

Figure 4.5 – The File menu

In this section, we'll walk through the many options found in the File menu. Let's begin with the ways to locate and open a file, save a capture, and compare options that are available when you close a file.

Opening a file, closing, and saving

The first section in the File menu offers many choices for locating and opening files so that you can begin your analysis. While looking at the menu choices, you will see a light gray line that separates grouped objects. The first grouping is related to opening and closing a file, and it includes the following choices:

  • Open will launch a dialog box that will allow you to select any supported file.
  • Open Recent will list any recently accessed files...