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Network Technology, Mobility and Security

Sponsors

Microsoft Research Cambridge
Cesnet
iptel.org
Vodafone Czech Republic a.s.
CTI-PRO s.r.o.

Team

Lukáš Kencl (Project Leader), Eduardo Baena Martinez, Michal Ficek, Tomáš Pop, Jan Staněk, Petr Vláčil

Protection against attacks in IP telephony

The area of ​​IP telephony has undergone considerable development and expansion over the last fifteen years. This service is subject to attacks typical within IP infrastructure and to specific security risks. The main objective of this project is research, design and experimental verification of mechanisms to detect and protect against attacks on IP telephony and voice services. Our goal is to focus on systems protecting against attacks. In the field of voice applications, it is to explore the security risks associated with the design of voice applications and services using IP telephony.

This project is supported by Grant No. 315R1/2009 of the CESNET Fond rozvoje. For more information please refer to adela.feld.cvut.cz/prj315r1/.

SS7Tracker

The SS7Tracker project on network-based active tracking was developed as a monitoring platform for roaming traffic, with the purpose of GSM network improvement. Modular client-server architecture takes advantage of SS7 signaling to retrieve mobile network subscriber cell association in real time. This is useful for statistical analysis of GSM network performance and coverage. Extensibility and modularity of the platform serve as inspiration for various follow-up projects from the Location Based Services (LBS) and LBS-advertising domain. The growing demand for time and spatial data of subscriber movement for urbanistic and sociological purposes leads to further improvements of the SS7Tracker platform in this up-to-date field of study.

Mobile Location Protocol Library

Project that is extending SS7Tracker is called Opensource MLP implementation. Its purpose is to develop Mobile Location Protocol (MLP) library in C++. This library provides standardized interface for acquiring location of mobile devices from mobile network. MLP is designed for IP networks, thus this requests can be performed by external entities that are not part of mobile networks.

More about this project can be found at http://libmlp-cpp.sourceforge.net.

Legacy of Nikola Tesla - Wireless monument

As Urban neighborhood Praha 6 claimed a project of an active monument dedicated to Nikola Tesla was realized. There is an connection of Nikola Tesla´s wish for wireless communication and dematerialization, that all his work contain and is reflected in this type of monument. The main demand on realization of this monument is sending short information messages to visitors around mentioned monument. The main aim of the project, that is bring to effect in RDC, is verified if this unique idea can be realized. An output of the project is a summary document including all possibilities of realization.

Publications

Jan Stanek, Lukáš Kencl, Jirí Kuthan
Analyzing Anomalies in Anonymized SIP Traffic
IFIP Networking
June 2-4, 2014 | Trondheim, Norway
[ ABSTRACT ]   [ FULL DOCUMENT ]


Jan Stanek, Lukáš Kencl, Alessandro Sorniotti, Elli Androulaki
A Secure Data Deduplication Scheme for Cloud Storage
18th International Conference on Financial Cryptography and Data Security (FC)
March 3–7, 2014 | Rockley, Barbados
[ ABSTRACT ]   [ FULL DOCUMENT ]


Michal Ficek, Tomáš Pop, Lukáš Kencl
Active Tracking in Mobile Networks: An in-Depth View
Computer Networks, Vol 57, Issue 9
June 19, 2013 |
[ ABSTRACT ]   [ FULL DOCUMENT ]


Eduardo Baena Martinez, Michal Ficek, Lukáš Kencl
Mobility Data Anonymization by Obfuscating the Cellular Network Topology Graph
IEEE International Conference on Communications (ICC)
Communication and Information Systems Security Symposium
June 9-13, 2013 | Budapest, Hungary
[ ABSTRACT ]   [ FULL DOCUMENT ]


Jan Stanek, Lukáš Kencl, Jirí Kuthan
Characteristics of Real Open SIP-Server Traffic
14th Passive and Active Measurement conference
March 18-19, 2013 | Hong Kong
[ ABSTRACT ]   [ FULL DOCUMENT ]



Jakub Doležal, Lukáš Kencl
Improving QoE of SIP-based automated voice interaction in mobile networks
8th International Conference on Network and Service Management (CNSM)
October 22-26, 2012 | Las Vegas, USA
[ ABSTRACT ]   [ FULL DOCUMENT ]



Michal Ficek, Lukáš Kencl
Inter-Call Mobility Model: A Spatio-temporal Refinement of Call Data Records Using a Gaussian Mixtur
IEEE Infocom 2012
March 25-30, 2012 | Orlando, Florida, USA
[ ABSTRACT ]   [ FULL DOCUMENT ]



Katerina Dufková, Miroslav Miroslav Popovic, Ramin Khalili, Jean-Yves Le Boudec, Milan Bjelica, Lukáš Kencl
Energy Consumption Comparison of Macro-Micro and Public Femto Deployment in a Plausible LTE Network
2nd International Conference on Energy-Efficient Computing and Networking (e-Energy)
May 31 - June 1, 2011 | New York, NY, USA
[ ABSTRACT ]   [ FULL DOCUMENT ]



Michal Ficek, Tomáš Pop, Petr Vlácil, Katerina Dufková, Lukáš Kencl, Martin Tomek
Performance Study of Active Tracking in a Cellular Network Using a Modular Signaling Platform
The 8th Annual International Conference on Mobile Systems, Applications and Services (ACM Mobisys)
June 15-18th, 2010 | San Francisco, CA, USA
[ ABSTRACT ]   [ FULL DOCUMENT ]


Katerina Dufková, Milan Bjelica, Byongkwon Moon, Lukáš Kencl, Jean-Yves Le Boudec
Energy Savings for Cellular Network with Evaluation of Impact on Data Traffic Performance
16th European Wireless Conference
April 12-15, 2010 | Lucca, Italy
[ ABSTRACT ]   [ FULL DOCUMENT ]



Katerina Dufková, Jean-Yves Le Boudec, Lukáš Kencl, Milan Bjelica
Predicting User-Cell Association in Cellular Networks from Tracked Data
The 11th International Conference on Ubiquitous Computing (UBICOMP)
The 2nd ACM International Workshop on Mobile Entity Localization and Tracking in GPS-less Environments (MELT)
September 30, 2009 | Orlando, FL, USA
[ ABSTRACT ]   [ FULL DOCUMENT ]


Petr Vlácil, Robert Bešťák
Implementing Mobile Location Protocol
32nd International Conference Telecommunications and Signal Processing (TSP)
August 26-27, 2009 | Dunakiliti, Hungary
[ ABSTRACT ]   [ FULL DOCUMENT ]


Jaroslav Vrána, Petr Vlácil, Robert Bešťák
Enhancement of Managed Roaming Procedure in GSM
5th International Wireless Communications and Mobile Computing Conference (IWCMC)
June 21-24, 2009 | Leipzig, Germany
[ ABSTRACT ]   [ FULL DOCUMENT ]


Technical Reports

Chhaya Chao
RDC-TR-13-3 - Evaluation of Information-Concealing Performance in Email Filtering
[ ABSTRACT ]   [ FULL DOCUMENT ]

Julien Mamelli
RDC-TR-13-4 - Evaluation of Compressibility of the Output of the Information-Concealing Algorithm
[ ABSTRACT ]   [ FULL DOCUMENT ]

Florence Guitard, Lukáš Kencl
RDC-TR-11-1 - Windows Azure and SIP
[ ABSTRACT ]   [ FULL DOCUMENT ]

Jan Stanek
RDC-TR-09-2 - Voice2Web Security Testing
[ ABSTRACT ]   [ FULL DOCUMENT ]

Jan Stanek
RDC-TR-09-6 - Voice2Web security - Camnep integration
[ ABSTRACT ]   [ FULL DOCUMENT ]

Jan Stanek
RDC-TR-09-7 - Voice2Web security - Asterisk with TLS support
[ ABSTRACT ]   [ FULL DOCUMENT ]

Contact
R&D Centre (RDC) for Mobile Applications
Dept of Telecommunications Engineering
Faculty of Electrical Engineering
Czech Technical University in Prague
Technická 2, 166 27 Prague 6
Czech Republic

Tel.: (+420) 224 355 991
Fax.: (+420) 233 335 999
E-mail: info@rdc.cz