LHAP: A lightweight network access control protocol for ad hoc networks

Sencun Zhu, Shouhuai Xu, Sanjeev Setia, Sushil Jajodia

Research output: Contribution to journalArticlepeer-review

37 Scopus citations


Most ad hoc networks do not implement any network access control, leaving these networks vulnerable to resource consumption attacks where a malicious node injects packets into the network with the goal of depleting the resources of the nodes relaying the packets. To thwart or prevent such attacks, it is necessary to employ authentication mechanisms to ensure that only authorized nodes can inject traffic into the network. We propose LHAP, a hop-by-hop authentication protocol for ad hoc networks. LHAP resides in between the network layer and the data link layer, thus providing a layer of protection that can prevent or thwart many attacks from happening, including outsider attacks and insider impersonation attacks. Our detailed performance evaluation shows that LHAP incurs small performance overhead and it also allows a tradeoff between security and performance.

Original languageEnglish (US)
Pages (from-to)567-585
Number of pages19
JournalAd Hoc Networks
Issue number5
StatePublished - Sep 2006

All Science Journal Classification (ASJC) codes

  • Software
  • Hardware and Architecture
  • Computer Networks and Communications


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