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LIP: A Lightweight Inter-layer Protocol for Network Access Control in Mobile Ad-Hoc Networks

By Hungyuan Hsu, Sencun Zhu and Ali Hurson

Abstract

Most ad hoc networks do not implement any network access control, leaving these networks vulnerable to packet injection attacks where a malicious node injects a large number of packets into the network with the goal of depleting the resources of the nodes relaying the packets. To prevent such attacks, it is necessary to employ authentication mechanisms that ensure that only authorized nodes can inject traffic into the network. We design a Lightweight Inter-layer Protocol (LIP) for network access control based on efficient local broadcast authentication mechanisms. In addition to preventing attacks by unauthorized nodes, LIP can also detect and minimize the impersonation attacks by compromised insider nodes. Through detailed simulation study, we show that LIP incurs small bandwidth overhead and has little impact on the traffic delivery ratio even in the case of high node mobility. Moreover, the transparency and independence properties of LIP allows it to be turned on/off as desired and to be integrated seamlessly with secure routing protocols, providing stronger security services for ad hoc networks. I

Year: 2009
OAI identifier: oai:CiteSeerX.psu:10.1.1.135.2309
Provided by: CiteSeerX
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