Eavesdropping and Packet Injection in Ethernet

Master Thesis



[Abstract of final thesis] Ethernet networks are generally considered safe for communication as long as both parties at the ends of an Ethernet cable are trusted and secure. This thesis tries to answer the question, is data transferred over an Ethernet cable is secure? The goal of this thesis is to engineer and attempt possible security breaches at physical layer of Ethernet networks. In order to provide a practical approach, this thesis draws parallels with the existing techniques for attacking wireless networks, and provide possible modifications to apply them for wired communication. The thesis is divided into passive and active attacks. For the passive eavesdropping attack, a method to acquire the electromagnetic signature from Ethernet cables is presented, along with a step by step process to analyze and decode these signatures into readable data. In active attacks, method on how to perform jamming or Denial- of-Service attack on Ethernet cable with the use of RF transmission is explained, followed by a discussion on possible data injection techniques. The thesis concludes by highlighting the vulnerabilities in Ethernet communication, with the extension of more sophisticated attacks possible in near future.

End: 16.03.2015


Student: Abdullah Tahir

Research Areas: Sichere Mobile Netze



Prof. Dr.-Ing. Matthias Hollick

Technische Universität Darmstadt
Department of Computer Science
Secure Mobile Networking Lab 

Mornewegstr. 32 (S4/14)
64293 Darmstadt, Germany

Phone: +49 6151 16-25472
Fax: +49 6151 16-25471


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