Book Image

Network Analysis using Wireshark 2 Cookbook - Second Edition

By : Nagendra Kumar Nainar, Yoram Orzach, Yogesh Ramdoss
Book Image

Network Analysis using Wireshark 2 Cookbook - Second Edition

By: Nagendra Kumar Nainar, Yoram Orzach, Yogesh Ramdoss

Overview of this book

This book contains practical recipes on troubleshooting a data communications network. This second version of the book focuses on Wireshark 2, which has already gained a lot of traction due to the enhanced features that it offers to users. The book expands on some of the subjects explored in the first version, including TCP performance, network security, Wireless LAN, and how to use Wireshark for cloud and virtual system monitoring. You will learn how to analyze end-to-end IPv4 and IPv6 connectivity failures for Unicast and Multicast traffic using Wireshark. It also includes Wireshark capture files so that you can practice what you’ve learned in the book. You will understand the normal operation of E-mail protocols and learn how to use Wireshark for basic analysis and troubleshooting. Using Wireshark, you will be able to resolve and troubleshoot common applications that are used in an enterprise network, like NetBIOS and SMB protocols. Finally, you will also be able to measure network parameters, check for network problems caused by them, and solve them effectively. By the end of this book, you’ll know how to analyze traffic, find patterns of various offending traffic, and secure your network from them.
Table of Contents (20 chapters)

Introduction

One of Wireshark's strengths is its statistical tools. When using Wireshark, we have various types of tools, starting from the simple tools for listing end-nodes and conversations, to the more sophisticated tools such as flow and I/O graphs.

In the following two chapters, we will learn how to use these tools. In this chapter, we will look at the simple tools that provide us with basic network statistics—that is, who talks to whom over the network, what are the chatty devices, what packet sizes run over the network, and so on. In the next chapter, we'll get into tools such as I/O and stream graphs, which provide us with much more information about the behavior of the network.

There are some tools that we will not talk about—some that are quite obvious (for example, packet sizes), and some that are less common (such as ANSP, BACnet, NCP, and...