NDLI: Protocols for mitigating blackhole attacks in delay tolerant networks

Content Provider	Springer Nature Link
Author	Nagrath, Preeti Aneja, Sandhya Gupta, Neelima Madria, Sanjay
Copyright Year	2015
Abstract	High node mobility and infrequent connectivity in delay tolerant networks (DTNs) makes it challenging to implement traditional security algorithms for detecting malicious nodes. In DTN, most of the routing algorithms are based on the announcement of routing metrics like probability of delivery, contact strength or social group strength by the nodes in contact. Blackhole in DTN exploits these characteristics of routing protocols and either announces a high value of these metrics or tries to attain a high value for them by following fast, repeated movement patterns. Dynamic social grouping (DSG) based routing algorithm shows that social behavior of nodes helps to make better forwarding decisions and to achieve highest message delivery ratio amongst other existing routing algorithms. We examine the impact of blackholes, intermittent blackholes and tailgating attack on DSG. We propose a suit of three solutions. Our first solution detects blackholes and tailgating malicious nodes in the network, however, is not suitable for intermittent blackholes. Second solution handles intermittent blackholes and performs well when the nodes are well connected. The third and final solution handles intermittent blackholes in sparsely connected as well as in well-connected networks. In all proposed solutions, blackholes are not able to degrade the performance of the protocols by changing their geographical locations. We demonstrate through simulation that our protocols improve upon the message delivery ratio over the existing solutions. An appropriate protocol from the suit may be used depending upon an application.
Starting Page	235
Ending Page	246
Page Count	12
File Format	PDF
ISSN	10220038
Journal	Wireless Networks
Volume Number	22
Issue Number	1
e-ISSN	15728196
Language	English
Publisher	Springer US
Publisher Date	2015-05-20
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Security Malicious node Tailgating node Black hole Communications Engineering, Networks Computer Communication Networks Electrical Engineering IT in Business
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Information Systems Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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