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Advanced Infrastructure Penetration Testing

You're reading from Advanced Infrastructure Penetration Testing Defend your systems from methodized and proficient attackers

Product type Paperback

Published in Feb 2018

Publisher Packt

ISBN-13 9781788624480

Length 396 pages

Edition 1st Edition

Tools

Linux

Concepts

Penetration Testing

Table of Contents (18) Chapters

Title Page

Packt Upsell

Contributors

Preface

1. Introduction to Advanced Infrastructure Penetration Testing FREE CHAPTER

2. Advanced Linux Exploitation

3. Corporate Network and Database Exploitation

4. Active Directory Exploitation

5. Docker Exploitation

6. Exploiting Git and Continuous Integration Servers

7. Metasploit and PowerShell for Post-Exploitation

8. VLAN Exploitation

9. VoIP Exploitation

10. Insecure VPN Exploitation

11. Routing and Router Vulnerabilities

12. Internet of Things Exploitation

1. Other Books You May Enjoy

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Index

VoIP fundamentals

In order to learn how to pentest VoIP, we need to have a clear understanding of how the VoIP infrastructure actually works. We are going to dissect VoIP protocols in order to learn later how to attack VoIP systems. The following subsections are some well-known standards that voice and video communications make possible. Let's explore them one by one.

H.323

H.323 is a data over IP standard introduced by the International Telecommunication Union Standardization Sector (ITU-T). As you can see, this standardization body uses letters to define the scope based on many criteria, listed here:

H: For audiovisual and multimedia systems
G: For transmission systems and media
Q: For switching and signaling
T: For terminals for telematic services

H.323 is one of the oldest packet-based communication systems protocols. Thus, this protocol is stable. The current version is v6. It is well used by many vendors in many products, such as Cisco call manager, NetMeeting, and RadVision.

H.323 uses many...

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