Book Image

BackTrack 5 Cookbook

By : Willie L. Pritchett, David De Smet
Book Image

BackTrack 5 Cookbook

By: Willie L. Pritchett, David De Smet

Overview of this book

<p>BackTrack is a Linux-based penetration testing arsenal that aids security professionals in the ability to perform assessments in a purely native environment dedicated to hacking. BackTrack is a distribution based on the Debian GNU/Linux distribution aimed at digital forensics and penetration testing use. It is named after backtracking, a search algorithm.<br /><br />"BackTrack 5 Cookbook" provides you with practical recipes featuring many popular tools that cover the basics of a penetration test: information gathering, vulnerability identification, exploitation, priviledge escalation, and covering your tracks.<br /><br />The book begins by covering the installation of BackTrack 5 and setting up a virtual environment to perform your tests.<br /><br />We then dip into recipes involving the basic principles of a penetration test such as information gathering, vulnerability identification, and exploitation. You will further learn about privilege escalation, radio network analysis, Voice over IP, Password cracking, and BackTrack forensics.<br /><br />"BackTrack 5 Cookbook" will serve as an excellent source of information for the security professional and novice alike.</p>
Table of Contents (17 chapters)
BackTrack 5 Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Monitoring, capturing, and eavesdropping on VoIP traffic


In this recipe, we will explore the process of using BackTrack 5 tools to monitor, capture, and eavesdrop on VoIP traffic. During this process, we will utilize two programs to assist us in each phase. They include:

  • Arpspoof: This program allows us to perform an ARP Poisoning attack on the network.

  • Wireshark: This program allows us to capture network traffic. We will also use Wireshark to convert the RTP traffic captured into playable audio files that allow us to eavesdrop.

Getting ready

The following requirements need to be fulfilled:

  • You will need an Internet or intranet connection to complete this recipe

  • You will also need SIP or PBX devices on your network in an active call

How to do it...

Let's begin the process of monitoring, capturing, and eavesdropping on VoIP traffic by launching a terminal window:

  1. Open a terminal window and turn on IP forwarding:

    echo 1 > /proc/sys/net/ipv4/ip_forward
    
  2. Next, we will launch Arpspoof to initiate...