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Accueil > Équipes > R3S > Séminaires R3S > Séminaires R3S 2021

Séminaire R3S présenté par Fetia Bannour et Nesrine Kaaniche le 25/03/2021

Nous vous invitons à un séminaire présenté par Fetia Bannour et Nesrine Kanniche, nouveaux membres intégrées dans l’équipe R3S du laboratoire Samovar

Quand : Jeudi 25 mars 2021 de 14h à 15h30,
en Visio sur le lien suivant : https://webconf.imt.fr/frontend/bad-yvk-kbx-xxe


A 14h - Nesrine Kaaniche
Titre : « Selective Access Control Mechanisms via Cryptographic Primitives »

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Abstract of presentation :
The economy and security of modern society relies on increasingly remote and distributed infrastructures. Thistrend increases both the complexity of access control to outsourced data and the need of privacy-preservingmechanisms. Indeed, access control policies should be flexible and distinguishable among usersusing the same resources and holding differentprivileges. Also, privacy preservation should be ensured against curious storage system administratorsas well as access requestors identities if needed.In this talk, Iwillfirstintroducea multi-level access control mechanism based on theusageof attribute-basedprimitivesand present different applications. Then, I will show how this primitive may be implementedto enhance the deploymentof open data platforms, while enhancing the privacy of end users.

Biography :
Nesrine Kaaniche is an Associate Professorin Cybersecurity at Télécom SudParis, Polytechnic Institute of Paris and an associate active member of the interdisciplinary chair Values andPolicies of Personal Information of Institute Mines Télécom, France. Previsouly, she was a lecturer in Cybersecurity at the Department of Computer Science, theUniversity of Sheffield, UK, aPost-Docresearcherat Télécom SudParis, France andan International Fellow at SRI International, San Francisco, CA,USA. Her major research interestsinclude privacy enhancing technologies and appliedcryptography for distributed systems anddecentralised architectures, i.e., IoT, fog and clouds.


A 14h45 - Fetia Bannour
Titre : « Software-Defined Networking : A Distributed SDN control plane for large-scale Networks »

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Abstract of presentation :

Software-Defined Networking (SDN) is an emerging network architecture paradigm that separates the network control and data planes, and moves the control logic to a centralized entity called the SDN controller. Centralized SDN designs raise many challenges including the issues of control plane scalability and reliability. To meet these challenges, it is necessary for the SDN control architecture to evolve towards a physically decentralized system. However, such physically-distributed, but logically-centralized, SDN designs bring an additional set of challenges. Our current research work deals with the problem of decentralizing the SDN control plane in the context of large-scale networks.

In this talk, we give a quick overview of our literature study on distributed SDN control which includes a taxonomy of state-of-the-art SDN controller platforms (i.e. a physical classification and a logical classification) and a thorough analysis of the major open challenges facing distributed SDN controller platforms. Then, we present the main approaches we followed to tackle some of the most prominent challenges related to the decentralization of the SDN control plane in large-scale networks.

The first approach addresses the SDN controller placement problem by proposing scalability and reliability aware strategies for the placement of the SDN controllers at scale using different types of multi-criteria optimization algorithms. The second and third approaches investigate the knowledge sharing problem in a distributed SDN cluster by proposing adaptive and continuous consistency models. The main aim of these two approaches is to achieve a consistency adaptation strategy that provides at runtime balanced trade-offs between the application’s continuous performance and consistency requirements. These real-time trade-offs should provide minimal application inter-controller overhead while satisfying the application-defined thresholds specified in the application SLAs. These models focus, in the first place, on the Anti-Entropy reconciliation mechanisms that can adapt to the applications’ real-time requirements in terms of performance and consistency. Then, they address the replication mechanisms by putting forward an intelligent Quorum-based replication strategy. These approaches were validated using two SDN applications with eventual consistency needs that are developed on top of the ONOS controllers : a source routing application and a CDN-like application.

Biography :

Fetia Bannour is an Associate Professor in Computer Science and Networks at the École Nationale Supérieure d’Informatique pour l’Industrie et l’entreprise (ENSIIE) and a member of the R3S research team at the SAMOVAR laboratory (Télécom SudParis).

She received her B.Eng degree in multidisciplinary engineering from the Tunisia Polytechnic School of the University of Carthage in 2014 and earned her Ph.D. in Computer Science and Networks from the University of Paris-Est in November 2019. Her research interests include network virtualization, software-defined networks, self-organized networks, distributed systems, adaptive and autonomous control mechanisms in large-scale networks, and the Internet of Things. She served as a local organizer for SaCCoNeT 2016 and as a student volunteer for IEEE ICC 2017. She is also a reviewer for several international conferences and journals such as IEEE ICC, IEEE GlobeCom, JNCA and IEEE TNSM.