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Wi-Fi Security
How to Break and Exploit
Thesis for the degree Master of Science
Hallvar Helleseth
Department of Informatics
University of Bergen
June 2006
The NoWires Research Group
http://www.nowires.org
Preface
This thesis explores security vulnerabilities in Wireless-Fidelity (Wi-Fi) networks. A
thorough description of critical security holes and practical examples of attacks are
given.
First a guide to the necessary equipment and how to set it up as an attack platform
is provided. Later it is demonstrated how the lack of security may aid a malicous
hacker to exploit interesting targets beyond the realm of Wi-Fi. Enough detail is
provided to enable duplication of the practical work done in parallell to writing this
thesis.
The aim is to give the reader a greater insight into how computer systems are
utilized by hackers, and eventually enable the design of more secure systems. For this
reason the targetted reader is one with an interest in computer security in general.
Necassary knowlegde of wireless networks is provided.
i
Acknowledgments
First of all, I would like to thank my supervisor, Professor Kjell Jørgen Hole, who
got me very excited about writing a thesis on Wi-Fi security. I appreciate that he
has taken the time to follow me up so closely and guiding me in making the right
descissions in regard to this thesis. I thank my father for skillfully guiding me into
a career I will enjoy. I would like to thank all present and previous members of
friByte for some fun times in whatever computer labs we have occupied. Naturally,
I appreciate my fellow friends from The NoWires Research Group who brought me
along on monthly excursions to pubs and the interesting discussions that followed.
iii
How to Break and Exploit
Thesis for the degree Master of Science
Hallvar Helleseth
Department of Informatics
University of Bergen
June 2006
The NoWires Research Group
http://www.nowires.org
Preface
This thesis explores security vulnerabilities in Wireless-Fidelity (Wi-Fi) networks. A
thorough description of critical security holes and practical examples of attacks are
given.
First a guide to the necessary equipment and how to set it up as an attack platform
is provided. Later it is demonstrated how the lack of security may aid a malicous
hacker to exploit interesting targets beyond the realm of Wi-Fi. Enough detail is
provided to enable duplication of the practical work done in parallell to writing this
thesis.
The aim is to give the reader a greater insight into how computer systems are
utilized by hackers, and eventually enable the design of more secure systems. For this
reason the targetted reader is one with an interest in computer security in general.
Necassary knowlegde of wireless networks is provided.
i
Acknowledgments
First of all, I would like to thank my supervisor, Professor Kjell Jørgen Hole, who
got me very excited about writing a thesis on Wi-Fi security. I appreciate that he
has taken the time to follow me up so closely and guiding me in making the right
descissions in regard to this thesis. I thank my father for skillfully guiding me into
a career I will enjoy. I would like to thank all present and previous members of
friByte for some fun times in whatever computer labs we have occupied. Naturally,
I appreciate my fellow friends from The NoWires Research Group who brought me
along on monthly excursions to pubs and the interesting discussions that followed.
iii