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Improving security issues in MANET AODV routing protocol
, Article Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST, 1 September 2015 through 2 September 2015 ; Volume 155 , November , 2015 , Pages 237-250 ; 18678211 (ISSN) ; 9783319250663 (ISBN) ; Hemmatyar, A. M. A ; Izadi, M ; Sharif University of Technology
Springer Verlag
2015
Abstract
Mobile Ad-hoc Networks (MANETs) are forming dynamically by joining or leaving the nodes into/from the network without any fix infrastructure. It is also possible that each mobile node act as a host or router. This kind of wireless network is prone to various security threats or attacks due to its unique characteristics like dynamic topology, open medium, lack of central monitoring, etc. So security is a vital scope in MANET to protect communication between mobile nodes. Ad-hoc On-demand Distance Vector (AODV) is one of the on-demand reactive routing protocols in MANET that initially was improved without considering security protection. Significant attempts have been done to secure AODV...
IDS modelling and evaluation in WANETs against black/grey-hole attacks using stochastic models
, Article International Journal of Ad Hoc and Ubiquitous Computing ; Volume 27, Issue 3 , 2018 , Pages 171-186 ; 17438225 (ISSN) ; Gharib, M ; Khosravi, M ; Movaghar, A ; Sharif University of Technology
Inderscience Enterprises Ltd
2018
Abstract
The aim of this paper is to model and evaluate the performance of intrusion detection systems (IDSs) facing black-hole and grey-hole attacks within wireless ad hoc networks (WANETs). The main performance metric of an IDS in a WANET can be defined as the mean time required for the IDS to detect an attack. To evaluate this measure, two types of stochastic models are used in this paper. In the first step, two different continuous time Markov chains (CTMCs) are proposed to model the attacks, and then, the method of computing the mean time to attack detection is presented. Since the number of states in the proposed CTMCs grows rapidly with increasing the number of intermediate nodes and the...
Improving Security Issues in MANET AODV Routing Protocol
, M.Sc. Thesis Sharif University of Technology ; Izadi, Mohammad (Supervisor)
Abstract
Nowadays, use of wireless networks and devices is inevitable due to their beneficial features, such as ease of use, portability, rapid and comfortable access to information. On the other hand, the security for wireless networks is a challenging matter by overwhelming increase over the number of mobile hardware and devices. Mobile Ad-hoc network (MANET) is a class of wireless networks, which forms dynamically by joining or leaving the nodes into/from the network without any fix infrastructure. This kind of network in comparison to other types of networks, is prone to various security threats or attacks due to its unique characteristics (dynamic topology, open medium, lack of central...
Active Trust Routing in MANETs
, M.Sc. Thesis Sharif University of Technology ; Hemmatyar, Ali Mohammad Afshin (Supervisor)
Abstract
The use of MANETs in many areas is rapidly spreading. Due to dynamic nature,and limited energy of this networks, they are vulnerable to some attacks including blackhole attack. Blackhole attack can disrupt the commiunication between hosts and cause denial of service. One of countermeasures to this attack which has been recently proposed is the ActiveTrust. ActiveTrust is a routing protocol which relys on malicious node detection using trust calculations; this scheme has been proposed for WSNs. In this work we adopt the ActiveTrust’s idea and try to apply it into MANETs. Then we simulate the resulting proposal in NS-3 and compare the results
Preventing black hole attack in AODV through use of hash chain
, Article 2011 19th Iranian Conference on Electrical Engineering, ICEE 2011, 17 May 2011 through 19 May 2011 ; May , 2011 , Page(s): 1 ; 9789644634284 (ISBN) ; Taheri, H ; Vakilinia, S ; Sharif University of Technology
2011
Abstract
Wireless ad hoc networks are vulnerable against many types of attacks including black hole. In this paper we investigate the effect of this attack on ad hoc networks. Furthermore, we use hash chain to prevent this type of attack in a network that uses AODV as a routing protocol and results of applying this method has been investigated. Simulation results using OPNET simulator indicates that packet delivery ratio, in the presence of malicious nodes, reduces remarkably and proposed approach can prevent the effect of black hole attacks