G. Das

Publications (3)0 Total impact

• Source

  Available from: Maria Fazio

  Conference Proceeding: Vulnerabilities of Internet Access Mechanisms from Mobile Ad Hoc Networks

  G. Das, M. Fazio, M. Villari, A. Puliafito
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  ABSTRACT: Gateway node provides connectivity to the nodes inside MANET. Based upon the route to gateway node found during discovery phase; source node relies on intermediate nodes to forward packets to the gateway node. We have identified a vulnerability of the gateway discovery phase where adversaries can forcibly introduce routes having wormholes exploiting the routing race conditions. We have termed such routes having wormholes as the pseudo routes. The pseudo route attack is a more generalized form of the wormhole attack where wormhole start and end points can be any two nodes in the route and even multiple wormholes can be present in the same route. We have proposed an end-to-end approach using localization information to detect and prevent pseudo route attacks. Simulation results are presented to show the impact of pseudo route attack under various scenarios as well as for performance of the proposed protocol. We found that attack impact is more when the gateway is at the corner of the network.
  Advanced Information Networking and Applications, 2006. AINA 2006. 20th International Conference on; 05/2006
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  Available from: Maria Fazio

  Article: CCID: Core construction for information dissemination in Ad Hoc scenario

  G Das, M Fazio, M Villari, A Puliafito
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  ABSTRACT: In this paper we introduce a new algorithm skillful to build a scheme suitable for Information Dissemination issue. This approach will be very scalable for data dissemination in ad hoc wireless networks in terms of network and device re-sources. The scheme is characterized by a backbone created through a reduced set of mobile node, able to disseminate the information to whole network; that backbone is defined core network. In detail three different approaches for CCID are designed based on inductive connectivity maintenance, node degree and node coverage. CCID works independent from the underlying routing protocol, it constructs core for efficient data dissemination and utilize broadcast advantage within the core. CCID is advantageous in case dynamic data with frequent updates and in critical resource constrained environment like Disaster Recovery. Analysis and simula-tion results are provided to show the effectiveness of CCID.
• Source

  Available from: Maria Fazio

  Conference Proceeding: Distributed core assisted scalable data dissemination in mobile ad hoc networks

  G. Das, M. Fazio, M. Villari, A. Puliafito
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  ABSTRACT: Data dissemination is used in mobile ad hoc networks (MANETs) for activities like issuing commands, propagating alarms, and configuring nodes. Existing forms of data dissemination are based upon push or pull approaches. We present a novel data dissemination approach that supports push and pull approaches as well as direct node-to-node dissemination method. Our proposal is to develop a highly connected core based on two-hop neighbor information to assist in dissemination. We propose some algorithms for selecting a subset of network's nodes to perform data dissemination on behalf of the complete network. The core structure is characterized by its ability to work with limited neighbor information, connectivity maintenance, high connectivity with other features related to node degree. This property helps to lessen the control overhead as piggybacking can be used to gain partial neighbor information. We provide simulation results showing the performances of the proposed scheme
  Collaborative Computing: Networking, Applications and Worksharing, 2005 International Conference on;