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

Types of tunneling protocols

As we have learned in the previous sections, a tunnel is a way of shipping a foreign protocol across a network that will not support it directly. Let's take a look at the different tunneling protocols and their characteristics to see how this is done.

The Point-to-Point Tunneling Protocol

Point-to-Point Tunneling Protocol is also known as PPTP. This was created by a consortium including Microsoft and other companies. PPTP is a fast protocol that, besides Windows, is also available to Linux and Mac users.

While PPTP does not have an inbuilt capability to provide traffic encryption, it relies on the Point-to-Point Protocol (PPP) to provide security measures during transmission.

PPTP allows traffic with different protocols to be encrypted and then encapsulated in an IP datagram to be sent across an IP network such as the Internet.

PPTP encapsulates PPP frames in the IP datagrams using a modified version of Generic Routing Encapsulation (GRE). A TCP connection is used...