Book Image

Learning Network Forensics

By : Samir Datt
Book Image

Learning Network Forensics

By: Samir Datt

Overview of this book

We live in a highly networked world. Every digital device—phone, tablet, or computer is connected to each other, in one way or another. In this new age of connected networks, there is network crime. Network forensics is the brave new frontier of digital investigation and information security professionals to extend their abilities to catch miscreants on the network. The book starts with an introduction to the world of network forensics and investigations. You will begin by getting an understanding of how to gather both physical and virtual evidence, intercepting and analyzing network data, wireless data packets, investigating intrusions, and so on. You will further explore the technology, tools, and investigating methods using malware forensics, network tunneling, and behaviors. By the end of the book, you will gain a complete understanding of how to successfully close a case.
Table of Contents (17 chapters)
Learning Network Forensics
About the Author
About the Reviewers

Collecting network traffic using Wireshark

While tcpdump is a cool tool to capture network traffic, Wireshark is widely used when it comes to network forensic investigations. In this section, we will focus on installing and using Wireshark to capture network traffic.

Wireshark is available for most of the OS, including Windows, Mac OS, and most flavors of Linux.

It is available for free download at

Using Wireshark

Install Wireshark using the Ubuntu Software Center, as shown in the following screenshot:

Run Wireshark with network privileges either directly or using the terminal to start capturing packets, as shown in the following screenshot:

Configure according to network topology and other specific details using the Capture Options, as shown in the following screenshot:

To get started, all we need to do is select an interface to start capturing packets from. Let's select eth0, as follows:

When we select an interface to start capturing packets (eth0), the...