Secure VoIP. Outline Who? CUBE Members Why? Motivation What? Project Description How? Design and Implementation.

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Presentation transcript:

Secure VoIP

Outline Who? CUBE Members Why? Motivation What? Project Description How? Design and Implementation

Outline Who? CUBE Members Why? Motivation What? Project Description How? Design and Implementation

CUBE Hakan Nizamoğlu Yiğitalp Ertem Saim Güveloğlu Murat Toprak

Outline Who? CUBE Members Why? Motivation What? Project Description How? Design and Implementation

Costs Same operator fee : 0.47 TL / min Other operators : 0.64 TL / min Turk Telekom : 0.60 TL / min Text message fee : 0.30 TL / message

Who is on the phone?

Security Problem of both telephony and internet communication. No solution for PSTNs or GSMs What are the problems on internet? Man-in-the-middle attack Administrator as Big Brother

Outline Who? CUBE Members Why? Motivation What? Project Description How? Design and Implementation

Project Description Secure VoIP VoIP stands for “Voice over Internet Protocol” Aims low cost and secure communication No extra cost other than internet fee Data can be encrypted Targets from companies, military, government to home users

VoIP Usage

VoIP with external device

Project Description Secure VoIP VoIP stands for “Voice over Internet Protocol” Aims low cost and secure communication No extra cost other than internet fee Data can be encrypted Targets from companies, military, government to home users

Project Description Secure VoIP VoIP stands for “Voice over Internet Protocol” Aims low cost and secure communication No extra cost other than internet fee Data can be encrypted Targets from companies, military, government to home users

Outline Who? CUBE Members Why? Motivation What? Project Description How? Design and Implementation

FPGA Board Input Device : Microphone Output Device : Speaker Single board computer Encryption on board CPU Data Transfer over Ethernet

Asterisk PBX Software Short for “private branch exchange” Bridge between endpoints Routs the data Open Source Telephony Project used by small businesses, large businesses, call centers, carriers and governments

Technologies JAVA Asterisk Embedded Linux Kernel 2.6 FPGA Board SIP / RTP / UDP Protocols

References ertarifeler/tarifesaniye ertarifeler/tarifesaniye “VoIP and Skype Security”, Simson L. Garfinkel “Network Protocols Handbook”, Javvin Technologies, INC

Thanks for your attention. You are welcome to ask questions.