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Monday, May 30, 2011
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Sunday, May 22, 2011
Game-theoretic approach to mitigate packet dropping in wireless Ad-hoc networks
Game-theoretic approach to mitigate packet dropping in wireless Ad-hoc networks
Tootaghaj, Diman Zad ; Farhat, Farshid ; Pakravan, Mohammad-Reza ; Aref, Mohammad-Reza ;
Information Systems and Security Lab (ISSL), Department of Electrical Engineering, Sharif University of Technology, Tehran, Iran
Information Systems and Security Lab (ISSL), Department of Electrical Engineering, Sharif University of Technology, Tehran, Iran
This paper appears in: Consumer Communications and Networking Conference (CCNC), 2011 IEEE
Issue Date : 9-12 Jan. 2011
On page(s): 163
Print ISBN: 978-1-4244-8789-9
Digital Object Identifier : 10.1109/CCNC.2011.5766444
Date of Current Version : 12 May 2011
ABSTRACT
Performance of routing is severely degraded when misbehaving nodes drop packets instead of properly forwarding them. In this paper, we propose a Game-Theoretic Adaptive Multipath Routing (GTAMR) protocol to detect and punish selfish or malicious nodes which try to drop information packets in routing phase and defend against collaborative attacks in which nodes try to disrupt communication or save their power. Our proposed algorithm outranks previous schemes because it is resilient against attacks in which more than one node coordinate their misbehavior and can be used in networks which wireless nodes use directional antennas. We then propose a game theoretic strategy, ERTFT, for nodes to promote cooperation. In comparison with other proposed TFT-like strategies, ours is resilient to systematic errors in detection of selfish nodes and does not lead to unending death spirals.
Risk of attack coefficient effect on availability of Ad-hoc networks
Risk of attack coefficient effect on availability of Ad-hoc networks
Tootaghaj, Diman Zad ; Farhat, Farshid ; Pakravan, Mohammad-Reza ; Aref, Mohammad-Reza ;
Information Systems and Security Lab (ISSL), Department of Electrical Engineering, Sharif University of Technology, Tehran, Iran
Information Systems and Security Lab (ISSL), Department of Electrical Engineering, Sharif University of Technology, Tehran, Iran
This paper appears in: Consumer Communications and Networking Conference (CCNC), 2011 IEEE
Issue Date : 9-12 Jan. 2011
On page(s): 166
Print ISBN: 978-1-4244-8789-9
Digital Object Identifier : 10.1109/CCNC.2011.5766445
Date of Current Version : 12 May 2011
ABSTRACT
Security techniques have been designed to obtain certain objectives. One of the most important objectives all security mechanisms try to achieve is the availability, which insures that network services are available to various entities in the network when required. But there has not been any certain parameter to measure this objective in network. In this paper we consider availability as a security parameter in ad-hoc networks. However this parameter can be used in other networks as well. We also present the connectivity coefficient of nodes in a network which shows how important is a node in a network and how much damage is caused if a certain node is compromised.
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