Book Image

Wireshark 2 Quick Start Guide

By : Charit Mishra
Book Image

Wireshark 2 Quick Start Guide

By: Charit Mishra

Overview of this book

<p>Wireshark is an open source protocol analyser, commonly used among the network and security professionals. Currently being developed and maintained by volunteer contributions of networking experts from all over the globe. Wireshark is mainly used to analyze network traffic, analyse network issues, analyse protocol behaviour, etc. - it lets you see what's going on in your network at a granular level. This book takes you from the basics of the Wireshark environment to detecting and resolving network anomalies.</p> <p>This book will start from the basics of setting up your Wireshark environment and will walk you through the fundamentals of networking and packet analysis. As you make your way through the chapters, you will discover different ways to analyse network traffic through creation and usage of filters and statistical features. You will look at network security packet analysis, command-line utilities, and other advanced tools that will come in handy when working with day-to-day network operations.</p> <p>By the end of this book, you have enough skill with Wireshark 2 to overcome real-world network challenges.</p>
Table of Contents (14 chapters)
Title Page
Packt Upsell
Contributors
Preface
8
Mastering the Advanced Features of Wireshark
Index

Chapter 5. Analyzing the Transport Layer Protocols TCP/UDP

This chapter will help you understand the underlying technology enabling movement of network traffic across routing infrastructures through analysis of the transport layer protocols Transmission Control Protocol (TCP) and User Datagram Protocol (UDP). TCP and UDP are the basis of networking protocols and it is important to understand their structure and behavior.

The following are the topics that we will cover in this chapter:

  • The TCP header and how it communicates
  • Understanding the TCP flags
  • Checking for different analysis flags in Wireshark
  • Understanding UDP traffic
  • Unusual patterns of TCP and UDP traffic

We will also look at some common anomalies that occur in day-to-day network operations.