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dc.contributor.advisorThulasiraman, Preetha
dc.contributor.authorAng, Cheng Hai
dc.dateDec-17
dc.date.accessioned2018-02-07T20:33:36Z
dc.date.available2018-02-07T20:33:36Z
dc.date.issued2017-12
dc.identifier.urihttp://hdl.handle.net/10945/56740
dc.descriptionApproved for public release; distribution is unlimiteden_US
dc.descriptionReissued 27 Sep 2018 to reflect updated abstract on pages i and v.
dc.description.abstractWireless sensor networks (WSNs) employ various technologies to facilitate low power communications. One such technology is the Internet Protocol version 6 (IPv6) Low Power Local Area Networks (6LoWPAN). One of the key concerns for 6LoWPAN networks is the vulnerability of its neighbor discovery (ND) protocol. In this thesis, we study the potential threat vectors against the ND protocol, focusing specifically on replay attacks that can cause denial of service (DoS). We propose a combination of hard and soft security approaches to mitigate cyber-attacks against the ND protocol. The hard security approach is based on a Trust-ND option, which includes a Timestamp, Nonce, and SHA-1 hashing function. The soft security approach leverages the social interactions between the nodes in the network to identify malicious nodes. We also propose a time-synchronization mechanism to synchronize the local clock of the nodes in the network. We demonstrate the effectiveness of the Nonce and Timestamp functions against replay attacks using the Contiki Operating System (OS) and Cooja network simulator. Via simulations, we also demonstrate the effectiveness of the time-synchronization mechanism. In addition, the data captured during the simulations is further analyzed using Wireshark.en_US
dc.publisherMonterey, California: Naval Postgraduate Schoolen_US
dc.rightsCopyright is reserved by the copyright owner.en_US
dc.titleA security strategy for cyber threats on neighbor discovery in 6LoWPAN networksen_US
dc.typeThesisen_US
dc.contributor.secondreaderDinolt, George
dc.contributor.departmentElectrical and Computer Engineering
dc.subject.authorIPv6 neighbor discoveryen_US
dc.subject.authorlightweight security mechanismen_US
dc.subject.author6LowPANen_US
dc.description.serviceCivilian, Defence Science and Technology Agency (DSTA)en_US
etd.thesisdegree.nameMaster of Science in Electrical Engineeringen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineElectrical Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US


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