secure voip. outline who? cube members why? motivation what? project description how? design and...
Post on 18-Dec-2015
217 views
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 DescriptionSecure 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 DescriptionSecure 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
Referenceshttp://www.voip-info.org/wiki/view/What+is+V
OIPhttp://www.economist.com/world/europe/displ
aystory.cfm?story_id=14921383http://www.turkcell.com.tr/bireysel/tarifeler/fa
turali/digertarifeler/tarifesaniye“VoIP and Skype Security”, Simson L.
Garfinkel “Network Protocols Handbook”, Javvin
Technologies, INC
Thanks for your attention.
You are welcome to ask questions.