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 1. Welcome to the World of Packet Analysis with Wireshark

This chapter provides you an introduction to the basics of the TCP/IP model and familiarizes you with the GUI of Wireshark along with a sample packet capture. You will be introduced to the following topics:

  • What is Wireshark?
  • How does it work?
  • A brief overview of the TCP/IP model
  • An introduction to packet analysis
  • Why use Wireshark?
  • Understanding the GUI of Wireshark
  • The first packet capture

Introduction to Wireshark

Wireshark is one of the most advanced packet capturing software, which makes the life of system/network administrators easy and proves its usefulness among the groups of security evangelists. Wireshark is also called a protocol analyzer, which helps IT professionals in debugging network-level problems. This tool can be of great use to optimize network performance.

Wireshark runs around dissecting network-level packets and showing packet details to concerned users as per their requirement. If you are one of those...