Accession Number : AD1053052


Title :   A Security Strategy for Cyber Threats on Neighbor Discovery in 6LoWPAN Networks


Descriptive Note : Technical Report


Corporate Author : Naval Postgraduate School Monterey United States


Personal Author(s) : Ang,Cheng H


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1053052.pdf


Report Date : 27 Sep 2018


Pagination or Media Count : 121


Abstract : Wireless sensor networks employ various technologies to facilitate low-power communications. One such technology is the Internet Protocol version 6 Low-Power Local Area Networks (6LoWPAN). One of the key concerns regarding 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. 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 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.


Descriptors :   wireless sensor networks , transport protocols , denial of service attack , security protocols , network architecture , cyberattacks , data links , internet of things , computer security , network simulation , local area networks


Distribution Statement : APPROVED FOR PUBLIC RELEASE