Net-Con’2004

Network Control and Engineering for QoS, Security and Mobility

IFIP TC6 Conference

Sponsored by the following IFIP Working Groups:

WG6.2 (Network and Internetwork Architectures)

WG6.6 (Management of Networks and Distributed Systems)

WG6.7 (Smart Networks)

WG6.8 (Mobile and Wireless Communications)

Organised by the Universitat de les Illes Balears

Palma de Mallorca, Spain

November 2 – 5, 2004

GENERAL CHAIR R. Puigjaner, Universitat de les Illes Balears (ES)

PROGRAM CO-CHAIRS D. Gaïti, Université Technique de Troyes (FR)

S. Galmés , Universitat de les Illes Balears (ES)

STEERING COMMITTEE A. Casaca, INESC (PT)

A.A. Lazar, Columbia University (US)

Al-Naamany, Sultan Qaboos University (OM)

O. Martikainen, Micsom (SF)

G. Pujolle, LIP6 (FR)

J. Slavik, Testcom (CZ)

O. Spaniol, RWT Aachen (DE)

TUTORIAL CHAIR J.-L. Ferrer, Universitat de les Illes Balears (ES)

FINANCIAL CHAIR B. Serra, Universitat de les Illes Balears (ES)

PROGRAM COMMITTEE A. Al-Naamany, Sultan Qabous University (OM)

F. Arve Aagesen, Norwegian University (NO)

G. Bianchi, Universita di Palermo (IT)

A. Benzekri, Université Paul Sabatier (FR)

C. Blondia, Univestiy of Antwerpen (BE)

R. Boutaba, University of Waterloo (CA)

A. Casaca, INESC (PT)

O. Cherkaoui, UQAM (CA)

P. Cuenca, Universidad de Castilla La Mancha (ES)

W. Dabbous, INRIA (FR)

F. Davoli, Univesita di Genova (IT)

J. Domingo, Universitat Politècnica Catalunya (ES)

O. Duarte, Universidade Federal de Rio de Janeiro (BR)

A. El Sherbini, National Telecommunication Institute EG)

J. Escobar, Centauritech (PA)

L. Fratta, Politecnico de Milano (IT)

G. Haring, Wien Univeristät (AT)

D.-Y. Hu, Institute of Network Technology (CN)

L. Huguet, Universitat de les Illes Balears (ES)

V. B. Iversen, Technical University of Denmark (DK)

F. Kamoun, Université La Manouba (TU)

U. Korner, Lund University (SE)

G. Leduc, Université de Liège (BE)

G. Omidyar, Institute for Communications Research (SG)

G. Pacifici, IBM, (US)

H. Perros, North Carolina State University (US)

G. Pujolle (LIP6 (FR)

F. J. Quiles, Universidad de Castilla La Mancha (ES)

R. Reda, Siemens AG (DE)

T. Saito, Toyota (JP)

B. Serra, Universitat de les Illes Balears (ES)

J. Slavik, Testcom (CZ)

O. Spaniol, RWT Aachen (DE)

Y. Stavrakakis, Universtiy of Athens (GR)

Y. Takahashi, Kyoto University (JP))

F. Tobagi, Stanford University (US)

ORGANISING COMMITTEE L. Carrasco, Universitat de les Illes Balears (ES)

I. Furió, Universitat de les Illes Balears (ES)

M. Payeras, Universitat de les Illes Balears (ES)

LOCATION

The sessions will be held at the Conference room (Sala d’Actes) of the Guillem Cifre de Cologna building in the UIB campus (Valldemossa road km 7.5).

TRANSPORTATION

A bus will pick up the conference attendees at the official hotels at 08:15 to bring them to the conference site. At the end of the sessions a bus will transport the attendees to the official hotels.

TUTORIALS

T-1

Internet Multimedia Applications: Challenges and Design

Raouf Boutaba, University of Waterloo (Canada)

Abstract

New multimedia networking applications such as entertainment video, IP telephony, Internet radio, teleconferencing, interactive games, virtual worlds, and others have known an explosive growth in the recent years. These applications are highly sensitive to end-to-end delay and delay variation. These particular service requirements suggest that a network architecture that has been designed primarily for packet loss sensitive data communication is not adequate for supporting multimedia applications. A number of efforts to extend the Internet architecture to provide explicit support for the service requirements of multimedia applications are currently deployed. These efforts involve the development of new standards for framing and controlling the transmission of multimedia data, dedicated transport protocols, new signaling protocols, and new network layer service abstractions. This tutorial examines the key principles of the next-generation Internet architecture being developed to support service classes that provide quality-of-service (QoS) performance guarantees to multimedia applications. This tutorial will also discuss policy-based networking as the control component of next generation QoS-sensitive Internet.

Biography

Dr. Raouf Boutaba is currently an Associate Professor in the School of Computer Science of the University of Waterloo. Before that he was with the Department of Electrical and Computer Engineering of the University of Toronto. Before joining academia, he founded and was the director of the telecommunications and distributed systems division of the Computer Science Research Institute of Montreal (CRIM). Dr. Boutaba conducts research in the areas of network and distributed systems management and resource management in multimedia wired and wireless networks. He has published more than 120 papers in refereed journals and conference proceedings. He is the recipient of the Premier's Research Excellence Award, a fellow of the faculty of mathematics of the University of Waterloo, and a distinguished lecturer of the IEEE Computer Society. Dr. Boutaba is the Chairman of the IFIP Working Group on Networks and Distributed Systems, the Vice Chair of the IEEE Communications Society Technical Committee on Information Infrastructure, and the Chair of the IEEE Communications Society Committee on Standards. He is the founder and editor in Chief of the IEEE ComSoc eTransactions on Network and Service Management, on the advisory editorial board of the Journal of Network and Systems Management, on the editorial board of the KIKS/IEEE Journal of Communications and Networks, and the editorial board of the Journal of Computer Networks.

T-2

MPLS and GMPLS Architectures

Harry Perros, North Carolina State University (USA)

Abstract

The Multi-Protocol Label Switched (MPLS) introduces a connection-oriented structure into the otherwise connectionless IP network. It was originally proposed for packet-switched networks, such as IP networks, ATM, and Frame Relay. Subsequently it was extended to generalized MPLS (GMPLS) which is also applicable to optical networks and TDM networks. In this tutorial we will first explore the basic features of MPLS and its signaling protocols: LDP, CR-LDP, and RSVP-TE. Subsequently, we will describe the main features of wavelength routing optical networks and introduce GMPLS.

Topics: 1. Main features of MPLS

2. Signaling Protocols (LDP, CR-LDP, RSVP-TE)

3. Wavelength routing optical networks

4. GMPLS

5. Extensions of CR-LDP and RSVP-TE for GMPLS

Biography

Harry G. Perros is a Professor of Computer Science, an Alumni Distinguished Graduate Professor, and the Program Coordinator of the Master of Science degree in Computer Networks at NC State University.

He received the B.Sc. degree in Mathematics in 1970 from Athens University, Greece, the M.Sc. degree in Operational Research with Computing from Leeds University, England, in 1971, and the Ph.D. degree in Operations Research from Trinity College Dublin, Ireland, in 1975. He has held visiting faculty positions at INRIA, Rocquencourt, France (1979), NORTEL, Research Triangle Park, North Carolina (1988-89 and 1995-96) and University of Paris 6, France (1995-96, 2000, and 2002).

He has published extensively in the area of performance modelling of computer and communication systems, and he has organized several national and international conferences. He has also published two print books: Queueing Networks with Blocking: Exact and Approximate Solutions, Oxford Press 1994, An Introduction to ATM Networks, Wiley 2001, and an e-book Computer Simulation Techniques – The Definitive Introduction,2002. He is currently completing a textbook entitled Connection-Oriented Networks, scheduled to be published in the Spring of 2005 by Wiley.

In 1995, he founded the IFIP Working Group 6.3 on the Performance of Communication Systems, and he was the chairman from 1995 to 2002. As from 2004, he is the chairman of the IFIP Working Group 6.10 on Optical Networks. He is also a member of IFIP Working Groups 6.2, and 7.3, and an IEEE Senior Member. He also an associate Editor for the Performance EvaluationJournal, and the Telecommunications SystemsJournal.

His current research interests are in the areas of optical networks.

T-3

Evolution of ITU-T Authentication Services and the Standarization of Authorization Mechanisms: From PKIs to PMIs

Javier López Muñoz, Universidad de Málaga (Spain)

Abstract

The objective of this tutorial is to present the problems of advanced authentication and authorization services and how attribute certificate and Privilege Management Infrastructure (PMI) concepts, evolving from the traditional concepts of identity certificate and Public Key Infrastructure (PKI), have been proposed by the ITU-T as the tool and framework, respectively, for the provision of A&A services in many of the new Internet applications.

Identity certificates (or public-key certificates) provide the best solution to integrate authentication service into most applications developed for the Internet that make use of digital signatures. However, new applications, particularly in the area of e-commerce, need an authorization service to describe what it is allowed for a user to do. In this case privileges to perform tasks should be considered.

Authorization is not a new problem, and different solutions have been used in the past. However, “traditional” solutions are not very helpful for many of the Internet applications. Those solutions are not easy to use in application scenarios where the use of identity certificates, to attest the connection of public keys to identified subscribers, is a must. In such scenarios, types of independent data objects that can contain user privileges would be of great help. Attribute certificates proposed by the ITU-T International Telecommunications Union X.509 recommendation in 2000 seems to provide an appropriate solution, as these data objects have been designed to be used in conjunction with identity certificates.

The use of a wide-ranging authentication service based on identity certificates is not practical unless it is complemented by an efficient and trustworthy mean to manage and distribute all certificates in the system. This is provided by a Public-Key Infrastructure (PKI), which at the same time supports encryption, integrity and non-repudiation services. Without its use, it is impractical and unrealistic to expect that large scale digital signature applications can become a reality.

Similarly, the attribute certificates framework defined by ITU provides a foundation upon which a Privilege Management Infrastructure (PMI) can be built. PKI and PMI infrastructures are linked by information contained in the identity and attribute certificates of every user. The link is justified by the fact that authorization relies on authentication to prove who you are.

Although the framework described by ITU is a very good staring point, it is certainly abstract, and leaves many open questions when implementation issues are considered. Maybe that is the reason why PMIs has not been widely deployed yet. For this reason, in this tutorial we will explain in detail how PMIs have evolved from PKIs and establish their similarities, we will study the insides of PMIs, and give guidelines for their implementation and use in e-commerce applications.

The outline of this tutorial is: (i) The Authentication problem; (ii) Identity Certificates and Certification Authorities; (iii) Public Key Infrastructures and limitations to solve the Authorization problem; (iv) Attribute Certificates and Privilege Management Infrastructures; (v) PMI models; (vi) Other initiatives.

Biography

Javier López received his BSc and MSc degrees in Computer Engineering from the University of Malaga in 1989 and 1992, respectively. After working as network manager and system analyst in the industrial sector, he joined the Department of Computer Science of the University of Malaga in 1994. He received his PhD degree in Computer Science in 2000, where he works as an associate professor. His current research activities focus on the design of security-related infrastructures, namely PKI and PMI, as well as on non-repudiation services for e-commerce and on the design/analysis of e-commerce protocols. In this area, he has been the Technical Manager of CASENET, a consortium of nine private companies and research centers working on the V Framework Programme Research Project “Computer Aided Solutions to Secure Electronic Commerce Transactions”.

T-4

Wireless Sensor Networks: State of the Art

Ozgur Baris Akan, Georgia Institute of Technology (USA)

Abstract

The objective of this tutorial is to present the concept of wireless sensor networks, which has been made viable by the significant developments in wireless communications and microelectro-mechanical systems technology, along with the communication and networking challenges and the currently proposed solutions.

The tutorial will cover the following: (i) Introduction to Wireless Sensor Networks and its applications; (ii) Application Layer; (iii) Transport Layer; (iv) Routing Protocols; (v) Link Layer; (vi) Conclusions.

Recent advances in Micro-Electro-Mechanical Systems (MEMS) and radio telecommunication techniques have enabled the production and deployment of tiny intelligent sensors to collect collaborative information about the physical environment. The collaborative effort of these networked wireless sensor nodes may provide sensing capabilities in space and time that surpass the achievements of current sensing systems. However, this objective necessitates the efficient and application specific communication protocols to assure the reliable communication of the sensed event features and hence enable the required actions to be taken by the actors in the smart environment. In this tutorial, the challenges and the existing solutions for the design and development of sensor/actor network communication protocols are presented. More specifically, application layer, transport layer, network layer, data link layer, in particular, error control and MAC protocols, are explained in detail. Open research issues for the realization of sensor and actor networks are also discussed.

Biography

Dr. Ozgur Baris Akan received his B.Sc. and M.Sc. degrees in Electrical and Electronics Engineering from Bilkent University and Middle East Technical University, Ankara, Turkey, in 1999 and 2001, respectively. He received his Ph.D. degree in Electrical and Computer Engineering in 2004 from the Broadband and Wireless Networking Laboratory at the School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA. He is currently an Assistant Professor at the Department of Electrical and Electronics Engineering, Middle East Technical University, Ankara, Turkey. His current research interests include wireless sensor networks, next generation wireless networks, and deep space communication networks.

NOVEMBER 2

08:00 Registration

09:00 TUTORIAL 1

Internet Multimedia Applications: Challenges and Design

Raouf Boutaba, University of Waterloo (Canada)

TUTORIAL 2

The MPLS and GMPLS Architectures

Harry Perros, North Carolina State University (USA)

10:30 Coffee break

11:00 TUTORIAL 1 and 2 (continuation)

12:30 Lunch

14:00 TUTORIAL 3

Evolution of ITU-T Authentication Services and the Standardization of Authorization Mechanisms: From PKIs to PMIs

Javier López Muñoz, Universidad de Málaga (Spain)

TUTORIAL 4

Wireless Sensor Networks: State of the Art

Özgur B. Akan, Georgia Institute of Technology (USA)

15:30 Coffee break

16:00 TUTORIAL 3 and 4 (continuation)

NOVEMBER 3

09:00 Opening Session

09:30 Keynote Speech

Pervasive wireless networks engineering

Guy Pujolle, University of Paris 6 (France)

10:30 Coffee break

11:00 Session 1: Network Policy

Configuration Model for Network Management

R. Deca, University of Quebec at Montreal & Cisco Systems, Inc., O. Cherkaoui, University of Quebec at Montreal, & D. Puche, Cisco Systems, Inc. (Canada)

On-line Control of Service Level Agreements

M. C. Penna & R. R. Wandresen, Pontifícia Universidade Católica do Paraná (Brazil)

Revenue-aware Resource Allocation in the Future Multi-service IP Networks

J. Zhang, T. Hämäläinen & J. Joutsensalo, University of Jyväskylä (Finland)

12:30 Lunch

14:00 Session 2: Network Security

A Kerberos-based Authentication Architecture for Wireless LANs: Test beds and Experiments.

M. A. Kaafar, L. Ben Azzouz & F. Kamoun, Université de la Manouba (Tunisia)

An efficient mechanism to ensure location privacy in telecom service applications

O. Jorns & S. Bessler &, Telecommunications Research Centre Vienna, & R. Pailer, Mobikom Austria (Austria)

Network Security Management: A Formal Evaluation Tool based on RBAC Policies

R. Laborde, B. Nasser, F. Grasset, F. Barrère & A. Benzekri, Université Paul Sabatier (France)

15:30 Coffee Break

16:00 Session 3: Quality of Service

A Dynamic Cross Layer Control Strategy for Resource Partitioning in a Rain Faded Satellite Channel with Long-Lived TCP Connections

N. Celandroni, ISTI-CNR, F. Davoli, CNIT and Universita de Genova, E. Ferro & A. Gotta, ISTI-CNR (Italy)

Content Location and Distribution in Converged Overlay Networks

O. Unger, Technion - Israel Institute of Technology and Zoran Microelectronics, & I. Cidon, Technion - Israel Institute of Technology (Israel)

A Communication Architecture for Real-time Auctions

H. Kaffel Ben Ayed, S. Kaabi Chihi & F. Kamoun, Université de la Manouba (Tunisia)

20:00 Reception at the Bellver Castle

Offered by the Palma Town Hall

NOVEMBER 4

09:00 Session 4: Invited Talk

Optical Burst Switching: Where do we go from here?

Harry Perros, North Carolina State University (USA)

10:00 Coffee break

10:30 Session 5: Wireless Networks

An Interference-Based Prevention Mechanism against WEP Attack for 802.11b Network

W.-C. Hsieh, Shu-Te University, Y.-H. Chiu, National Yunlin University of Science & Technology, & C.-C. Lo, National Chiao-Tung University (Taiwan)

Restricted Dynamic Programming for Broadcast Scheduling

S. Wang, National Taiwan University of Science and Technology and Taiwan Police College, & H.-I. Chen, National Taiwan University of Science and Technology (Taiwan)

Performance Comparison of Distributed Frequency Assignment Algorithms for Wireless Sensor Networks

S. Waharte & R. Boutaba, University of Waterloo (Canada)

Fast Handoff Support in an IP-evolved UMTS Architecture

By L. Dimopoulou, G. Leoleis & I. S. Venieris, National Technical University of Athens (Greece)

12:30 Lunch

14:00 Session 6: Posters

Toward an Intelligent Bandwidth Broker Model for Resources Management in DiffServ Networks

R. Nassrallah, M. Lemercier & D. Gaïti, Université Technique de Troyes (France)

A Learning and Intentional Local Policy Decision Point for Dynamic QoS Provisioning

F. Krief & D. Bouthinon, Université Paris XIII (France)

Generic IP Signaling Service Protocol

T. T. Luu & N. Boukhatem, Télécom ENST Paris (France)

On Distributed System Supervision - A Modern Approach: GeneSys

J.-E. Bohdanowicz, EADS Space Transportation (France), L. Kovacs, B. Pataki, MTA STAKI (Hungary), A. Sadovykh, Université Paris 6 (France) & S. Wesner, Stuttgart University (Germany)

Multigroup Communication Using Active Networks Technology

A. Chodorek, Kielce University of Technology, & R. R. Chodorek, AGH University of Science and Technology (Poland)

Policy Usage in GMPLS Optical Networks

B. Daheb, Université Paris 6 & Institut Supérieur d’Electronique de Paris, & G. Pujolle, Université Paris 6 (France)

Beyond TCP/IP: a Context-Aware Architecture

G. Pujolle, H. Chaouchi, Université Paris 6, & D. Gaïti, Université Technique de Troyes (France)

15:30 Coffee Break

16:00 Session 7: Intelligent Networks

Storage Capacity Allocation Algorithms for Hierarchical Content Distribution

N. Laoutaris, V. Zissimopoulos & I. Stavrakakis, University of Athens (Greece)

An Inference Algorithm for Probabilistic Fault Management in Distributed Systems

J. Ding, FernUniversität Hagen (Germany) and Shanghai Jiao Tong University (P. R. China), B. Krämer, FernUniversität Hagen (Germany), Y. Bai, Shanghai Jiao Tong University (P. R. China) & H. Chen, East-China Institute of Computer Technology (P. R. China)

New Protocol for Grouping Data Using Active Network

A. Moreno, B. Curto & V. Moreno, Universidad de Salamanca (Spain)

21:00 Banquet

NOVEMBER 5

09:00 Session 8: Invited Talk

Event-to-Sink Reliable Transport in Wireless Sensor Networks

Özgur B. Akan, Georgia Institute of Technology (USA)

10:00 Coffee break

10:30 Session 9: Performance Evaluation

An Algebraic Model of an Adaptive Extension of DiffServ for MANETs

O. Salem & A. Benzekri, Université Paul Sabatier de Toulouse (France)

Cross-layer Performance Evaluation of IP-based Applications Running over the Air Interface

D. Moltchanov, Y. Koucheryavy & J. Harju, Tampere University of Technology (Finland)

Collision Avoidance and Fairness Issues in Metropolitan Optical Access Networks

N. Bouabdallah, Université Paris 6 and Alcatel Research & Innovation, A.-L. Beylot, ENSEEIHT, & G. Pujolle, Université Paris 6 (France)

12:00 Closing Session

12:30 Lunch