Book Image

Mastering Wireshark

Book Image

Mastering Wireshark

Overview of this book

Wireshark is a popular and powerful tool used to analyze the amount of bits and bytes that are flowing through a network. Wireshark deals with the second to seventh layer of network protocols, and the analysis made is presented in a human readable form. Mastering Wireshark will help you raise your knowledge to an expert level. At the start of the book, you will be taught how to install Wireshark, and will be introduced to its interface so you understand all its functionalities. Moving forward, you will discover different ways to create and use capture and display filters. Halfway through the book, you’ll be mastering the features of Wireshark, analyzing different layers of the network protocol, looking for any anomalies. As you reach to the end of the book, you will be taught how to use Wireshark for network security analysis and configure it for troubleshooting purposes.
Table of Contents (16 chapters)
Mastering Wireshark
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Chapter 8. Troubleshooting

This chapter will teach you how to configure and use Wireshark to perform network troubleshooting. You will also master the art of troubleshooting network issues using Wireshark. The following are the topics that we will cover in this chapter:

  • Using Wireshark to troubleshoot slow Internet issues

  • Lab up

  • Troubleshooting network latencies

  • Lab up

  • Troubleshooting bottleneck issues

  • Lab up

  • Troubleshooting application-based issues

  • Lab up

  • Practice questions

The loss of packets during transmissions is one of the most common problems that all network administrators deal with in their day-to-day lives. However, thankfully, we have various built-in error recovery features in the transmission protocol that come to our rescue to deal with the problems. However, it is essential to understand how these error recovery features work in order to troubleshoot the problems by just looking at the packets flow in the list pane if and when human intelligence is required. Troubleshooting latencies...