Book Image

Kali Linux 2 - Assuring Security by Penetration Testing - Third Edition

By : Gerard Johansen, Lee Allen, Tedi Heriyanto, Shakeel Ali
Book Image

Kali Linux 2 - Assuring Security by Penetration Testing - Third Edition

By: Gerard Johansen, Lee Allen, Tedi Heriyanto, Shakeel Ali

Overview of this book

Kali Linux is a comprehensive penetration testing platform with advanced tools to identify, detect, and exploit the vulnerabilities uncovered in the target network environment. With Kali Linux, you can apply appropriate testing methodology with defined business objectives and a scheduled test plan, resulting in a successful penetration testing project engagement. Kali Linux – Assuring Security by Penetration Testing is a fully focused, structured book providing guidance on developing practical penetration testing skills by demonstrating cutting-edge hacker tools and techniques with a coherent, step-by-step approach. This book offers you all of the essential lab preparation and testing procedures that reflect real-world attack scenarios from a business perspective, in today's digital age.
Table of Contents (24 chapters)
Kali Linux 2 – Assuring Security by Penetration Testing Third Edition
Credits
Disclaimer
About the Authors
About the Reviewer
www.PacktPub.com
Preface
Index

VPN enumeration


In this section, we will discuss discovering and testing the Virtual Private Network (VPN) systems.

Several years ago, when a branch office wanted to connect to the head office, it needed to set a dedicated network line between the branch and head offices. The main disadvantage of this method was the cost; a dedicated network line is expensive.

A VPN allows a branch office to connect to the head office using the public network (Internet). The cost of using a public network is much cheaper than using a dedicated line. With the VPN, the branch office will be able to use the application in the headquarters as if the branch office is located in the Local Area Network (LAN). The connection established is protected by encryption.

Based on the method used, VPN can be divided into at least three groups:

  • IPsec-based VPN: This type is a popular VPN solution for connecting the branch office to the head office's LAN. The branch office will install an IPsec VPN client on the network gateway...