27-08-2013, 12:56 PM
Secure Access for MANET Using Authorization Enforcement Facility
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Abstract
As MANETs are highly vulnerable to attacks due to its dynamic infrastructure, there may occur several attacks. Among those attacks routing attack is the most severe one. To systematically cope up with this routing attack ,Risk Aware Response Mechanism is used .In these mechanism IDS is used which detects malicious activities caused by malicious nodes ,Based on the risk of attack ,temporary decision is made whether isolation is needed or not .IDS used in risk aware response mechanism is static based approach .Hence rule set in IDS has to be updated often by the network administrator if there are any new emerging attacks. In this paper ,we propose a Authorization Enforcement Facility which uses risk as an input to determine how much a source node can be trusted.AEF considers both static approach as well as dynamic conditions in order to achieve better security and allow only secure communication to takes place between source and destination.
Introduction
Mobile Adhoc Networks (MANET) is a collection of mobile nodes and all those mobile nodes communicate with each other via wireless links either directly or relay on other nodes as routers. It does not need any predefined infrastructure and each and every node in the MANET environment are distributed and they does not have any centralized control. A mobile node dynamically keeps on changing due to mobility of nodes. MANET contains more number of mobile nodes within the network and they do not have any access point. The main goal of mobile adhoc networking is to extend mobility in to the realm of autonomous mobile, wireless domains.Each mobile node relies on each other for establishing communication within the network, and hence each mobile node plays a router role. Main advantages of MANETs are, the network can be set without any pre-existing infrastructure and can be set up at any place and any time. They provide access to information and services regardless of geographic position.
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Conclusions
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