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Unattended Wireless Sensor Networks (UWSNs) are characterized by long periods of disconnected operation and fixed or irregular intervals between visits by the sink. The absence of an online trusted third party, i.e., an on-site sink, makes existing trust management schemes used in legacy wireless sensor networks not applicable to UWSNs directly. In this paper, we propose a trust management scheme...
In the environment of Mobile Ad-hoc Networks (MANETs), devices can collaborate under the service-oriented architecture (SOA). However, as MANETs are infrastructure-less, devices may move randomly and join and leave the network at any time which leads to a permanently changing topology of the network. What adds to the unpredictability of the network is the limited resource of the nodes, including battery...
This paper describes the main features of an advanced communication model aimed to enhance the protection of critical energy assets against man-made attacks (terrorism) or natural disasters. The proposed model is based on a hybrid network architecture, which combines the advantages of different wireless technologies, such as Delay/Disruption Tolerant Networking, Mobile Ad-hoc Networks, and Wireless...
To ensure fair and secure communication in Mobile Ad hoc Networks (MANETs), the applications running in these networks must be regulated by proper communication policies. However, enforcing policies in MANETs is challenging because they lack the infrastructure and trusted entities encountered in traditional distributed systems. This paper presents the design and implementation of a policy enforcing...
The absence of a router or a base station urges the need for a better access control mechanism in the ad-hoc networks. All the nodes in the network need to cooperate among themselves for proper functioning of the network. It is important to provide access only to the nodes, which cooperate in routing and forwarding, and to deny access to the selfish nodes. Selfish nodes send and receive their own...
In this research, we propose a robust Sybil attack detection framework for MANETs based on cooperative monitoring of network activities. We do not require designated and honest monitors to perform the Sybil attack detection. Each mobile node in the network observes packets passing through it and periodically exchanges its observations in order to determine the presence of an attack. Malicious nodes...
Wireless Sensor Networks are traditionally composed of a multiplicity of sensor nodes that sense given phenomena and deliver the sensed data to specific sink nodes. In the most of the application scenarios, sensor nodes have been considered motionless. On the contrary, interesting possibilities arise if some sensors are embedded in devices carried by mobile agents as people, cars, animals, etc. If...
In this paper, a new honest-rate base collaborative intrusion detection system (HIDS) has been proposed for mobile, ad-hoc networks. The method uses promiscuous mode of working along with rating and collaborative decision making based on multiple threshold values. All nodes join the network with an initial value of 1 for an honesty rate index, termed as h-rate. The h-rate of a node dynamically increases...
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