Djahel soufiene (10 risultati)

Condizione: New.

Condizione: New.

Taschenbuch. Condizione: Neu. Druck auf Anfrage Neuware - Printed after ordering - Doctoral Thesis / Dissertation from the year 2011 in the subject Computer Science - Internet, New Technologies, Lille 1 University (Laboratoire d'Informatique Fondamentale de Lille), course: Security in Wireless Multi-hop Networks, language: English, abstract: While the rapid proliferation of mobile devices along with the tremendous growth of various applications using wireless multi-hop networks have significantly facilitate our human life, securing and ensuring high quality services of these networks are still a primary concern. In particular, anomalous protocol operation in wireless multi-hop networks has recently received considerable attention in the research community. These relevant security issues are fundamentally different from those of wireline networks due to the special characteristics of wireless multi-hop networks, such as the limited energy resources and the lack of centralized control. These issues are extremely hard to cope with due to the absence of trust relationships between the nodes.To enhance security in wireless multi-hop networks, this dissertation addresses both MAC and routing layers misbehaviors issues, with main focuses on thwarting black hole attack in proactive routing protocols like OLSR, and greedy behavior in IEEE 802.11 MAC protocol. Our contributions are briefly summarized as follows.As for black hole attack, we analyze two types of attack scenarios: one is launched at routing layer, and the other is cross layer. We then provide comprehensive analysis on the consequences of this attack and propose effective countermeasures. As for MAC layer misbehavior, we particularly study the adaptive greedy behavior in the context of Wireless Mesh Networks (WMNs) and propose FLSAC (Fuzzy Logic based scheme to Struggle against Adaptive Cheaters) to cope with it. A new characterization of the greedy behavior in Mobile Ad Hoc Networks (MANETs) is also introduced. Finally, we design a new backoff scheme to quickly detect the greedy nodes that do not comply with IEEE 802.11 MAC protocol, together with a reaction scheme that encourages the greedy nodes to become honest rather than punishing them.…

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Taschenbuch. Condizione: Neu. Druck auf Anfrage Neuware - Printed after ordering - Mémoire de Maîtrise de l'année 2007 dans le domaine Informatique - Général, Université Abderrahmane Mira (-), cours: Computer Science, langue: Français, résumé: Le développement continu des réseaux et de la conception des dispositifs sans fil rend les réseauxad hoc une technologie de plus en plus adoptée. Actuellement, différentes applicationssont déployées en mode ad hoc ; cependant, la sécurité reste un problème majeur à traiter.Les réseaux ad hoc sont, en particulier, vulnérables dus à leurs caractéristiques fondamentalestelles que : un medium ouvert, des contraintes d'énergie, une topologie dynamique, l'absenced'infrastructure, etc. Le routage joue un rôle important dans la sécurité du réseau entier. Engénéral, la sécurité du routage dans MANETs est un problème non trivial pour le résoudre.Dans ce travail, nous avons étudié la problématique de la sécurité du routage proactif, particulièrementle routage OLSR. En analysant, en détail, l'attaque du trou noir qui peut êtremenée de différentes manières sur le protocole OLSR, deux contre-mesures ont été proposées.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Doctoral Thesis / Dissertation from the year 2011 in the subject Computer Science - Internet, New Technologies, Lille 1 University (Laboratoire d'Informatique Fondamentale de Lille), course: Security in Wireless Multi-hop Networks, language: English, abstract: While the rapid proliferation of mobile devices along with the tremendous growth of various applications using wireless multi-hop networks have significantly facilitate our human life, securing and ensuring high quality services of these networks are still a primary concern. In particular, anomalous protocol operation in wireless multi-hop networks has recently received considerable attention in the research community. These relevant security issues are fundamentally different from those of wireline networks due to the special characteristics of wireless multi-hop networks, such as the limited energy resources and the lack of centralized control. These issues are extremely hard to cope with due to the absence of trust relationships between the nodes.To enhance security in wireless multi-hop networks, this dissertation addresses both MAC and routing layers misbehaviors issues, with main focuses on thwarting black hole attack in proactive routing protocols like OLSR, and greedy behavior in IEEE 802.11 MAC protocol. Our contributions are briefly summarized as follows.As for black hole attack, we analyze two types of attack scenarios: one is launched at routing layer, and the other is cross layer. We then provide comprehensive analysis on the consequences of this attack and propose effective countermeasures. As for MAC layer misbehavior, we particularly study the adaptive greedy behavior in the context of Wireless Mesh Networks (WMNs) and propose FLSAC (Fuzzy Logic based scheme to Struggle against Adaptive Cheaters) to cope with it. A new characterization of the greedy behavior in Mobile Ad Hoc Networks (MANETs) is also introduced. Finally, we design a new backoff scheme to quickly detect the greedy nodes that do not comply with IEEE 802.11 MAC protocol, together with a reaction scheme that encourages the greedy nodes to become honest rather than punishing them. 168 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Mémoire de Maîtrise de l'année 2007 dans le domaine Informatique - Général, Université Abderrahmane Mira (-), cours: Computer Science, langue: Français, résumé: Le développement continu des réseaux et de la conception des dispositifs sans fil rend les réseauxad hoc une technologie de plus en plus adoptée. Actuellement, différentes applicationssont déployées en mode ad hoc ; cependant, la sécurité reste un problème majeur à traiter.Les réseaux ad hoc sont, en particulier, vulnérables dus à leurs caractéristiques fondamentalestelles que : un medium ouvert, des contraintes d'énergie, une topologie dynamique, l'absenced'infrastructure, etc. Le routage joue un rôle important dans la sécurité du réseau entier. Engénéral, la sécurité du routage dans MANETs est un problème non trivial pour le résoudre.Dans ce travail, nous avons étudié la problématique de la sécurité du routage proactif, particulièrementle routage OLSR. En analysant, en détail, l'attaque du trou noir qui peut êtremenée de différentes manières sur le protocole OLSR, deux contre-mesures ont été proposées. 108 pp. Französisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Doctoral Thesis / Dissertation from the year 2011 in the subject Computer Science - Internet, New Technologies, Lille 1 University (Laboratoire d'Informatique Fondamentale de Lille), course: Security in Wireless Multi-hop Networks, language: English, abstract: While the rapid proliferation of mobile devices along with the tremendous growth of various applications using wireless multi-hop networks have significantly facilitate our human life, securing and ensuring high quality services of these networks are still a primary concern. In particular, anomalous protocol operation in wireless multi-hop networks has recently received considerable attention in the research community. These relevant security issues are fundamentally different from those of wireline networks due to the special characteristics of wireless multi-hop networks, such as the limited energy resources and the lack of centralized control. These issues are extremely hard to cope with due to the absence of trust relationships between the nodes. To enhance security in wireless multi-hop networks, this dissertation addresses both MAC and routing layers misbehaviors issues, with main focuses on thwarting black hole attack in proactive routing protocols like OLSR, and greedy behavior in IEEE 802.11 MAC protocol. Our contributions are briefly summarized as follows. As for black hole attack, we analyze two types of attack scenarios: one is launched at routing layer, and the other is cross layer. We then provide comprehensive analysis on the consequences of this attack and propose effective countermeasures. As for MAC layer misbehavior, we particularly study the adaptive greedy behavior in the context of Wireless Mesh Networks (WMNs) and propose FLSAC (Fuzzy Logic based scheme to Struggle against Adaptive Cheaters) to cope with it. A new characterization of the greedy behavior in Mobile Ad Hoc Networks (MANETs) is also introduced. Finally, we design a new backoff scheme to quickly detect the greedy nodes that do not comply with IEEE 802.11 MAC protocol, together with a reaction scheme that encourages the greedy nodes to become honest rather than punishing them.GRIN Publishing GmbH, Waltherstraße 23, 80337 München 168 pp. Englisch.…

Taschenbuch. Condizione: Neu. Secure Routing and Medium Access Protocols in Wireless Multi-hop Networks | Soufiene Djahel | Taschenbuch | 168 S. | Englisch | 2011 | GRIN Verlag | EAN 9783656041443 | Verantwortliche Person für die EU: GRIN Publishing GmbH, Waltherstr. 23, 80337 München, info[at]grin[dot]com | Anbieter: preigu Print on Demand. …

Taschenbuch. Condizione: Neu. Le routage OLSR et l'attaque du trou noir: Analyse & Détection | Soufiene Djahel | Taschenbuch | 108 S. | Französisch | 2011 | GRIN Verlag | EAN 9783656044611 | Verantwortliche Person für die EU: GRIN Publishing GmbH, Waltherstr. 23, 80337 München, info[at]grin[dot]com | Anbieter: preigu Print on Demand.…