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Kali Linux Wireless Penetration Testing Beginner???s Guide

You're reading from   Kali Linux Wireless Penetration Testing Beginner???s Guide Master wireless testing techniques to survey and attack wireless networks with Kali Linux, including the KRACK attack

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Product type Paperback
Published in Dec 2017
Publisher
ISBN-13 9781788831925
Length 210 pages
Edition 3rd Edition
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Authors (3):
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Vivek Ramachandran Vivek Ramachandran
Author Profile Icon Vivek Ramachandran
Vivek Ramachandran
Cameron Buchanan Cameron Buchanan
Author Profile Icon Cameron Buchanan
Cameron Buchanan
Daniel W. Dieterle Daniel W. Dieterle
Author Profile Icon Daniel W. Dieterle
Daniel W. Dieterle
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Toc

Table of Contents (14) Chapters Close

Preface 1. Wireless Lab Setup FREE CHAPTER 2. WLAN and Its Inherent Insecurities 3. Bypassing WLAN Authentication 4. WLAN Encryption Flaws 5. Attacks on the WLAN Infrastructure 6. Attacking the Client 7. Advanced WLAN Attacks 8. KRACK Attacks 9. Attacking WPA-Enterprise and RADIUS 10. WLAN Penetration Testing Methodology 11. WPS and Probes A. Pop Quiz Answers Index

WEP encryption

The WEP protocol was known to be flawed as early as 2000 but, surprisingly, it is still present in a lot of organizations and access points still ship with WEP enabled capabilities.

There are many cryptographic weaknesses in WEP and they were discovered by Walker, Arbaugh, Fluhrer, Martin, Shamir, KoreK, and many others. Evaluation of WEP from a cryptographic standpoint is not required for a basic understanding of how to break it. In this section, we will take a look at how to break WEP encryption using readily available tools on Kali Linux. This includes the entire aircrack-ng suite of tools: airmon-ng, aireplay-ng, airodump-ng, aircrack-ng, and others.

The fundamental weakness in WEP is its use of RC4 and a short IV value that is recycled every 224 frames. While this may appear to be a large number, there is a 50 percent chance of four IV reuses every 5,000 packets. To use this to our advantage, we generate a large amount of traffic so that we can increase the likelihood...

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