Book Image

Wireshark Revealed: Essential Skills for IT Professionals

By : James H Baxter, Yoram Orzach, Charit Mishra
Book Image

Wireshark Revealed: Essential Skills for IT Professionals

By: James H Baxter, Yoram Orzach, Charit Mishra

Overview of this book

This Learning Path starts off installing Wireshark, before gradually taking you through your first packet capture, identifying and filtering out just the packets of interest, and saving them to a new file for later analysis. You will then discover different ways to create and use capture and display filters. By halfway through the book, you'll be mastering Wireshark features, analyzing different layers of the network protocol, and looking for any anomalies.We then start Ethernet and LAN switching, through IP, and then move on to TCP/UDP with a focus on TCP performance problems. It also focuses on WLAN security. Then, we go through application behavior issues including HTTP, mail, DNS, and other common protocols. This book finishes with a look at network forensics and how to locate security problems that might harm the network.This course provides you with highly practical content explaining Metasploit from the following books: 1) Wireshark Essentials 2) Network Analysis Using Wireshark Cookbook 3) Mastering Wireshark
Table of Contents (5 chapters)

Chapter 6. Using the Expert Infos Window

In this chapter we will talk about the following:

  • The Expert Infos window and how to use it for network troubleshooting
  • Error events and understanding them
  • Warnings events and understanding them
  • Notes events and understanding them

Introduction

One of Wireshark's strongest capabilities is the ability to analyze network phenomena and suggest to us a probable cause for it. Along with other tools, it gives us detailed information on network performance and problems. In this chapter, we will learn about the Expert System. It is a tool that provides us with a deeper analysis of network phenomena, including events and problems. Later in this book, we will provide detailed recipes on how to use the Expert Infos window along with other tools to find and resolve network problems.

In the first recipe, we will learn how to work with the Expert Infos window. In the next recipes, we will learn about the probable causes for the majority of events that...