WormHole Attack in MANET
Networking , Technology & Science / August 19, 2017

A wireless ad-hoc network is temporarily set network by wireless mobile computers moving arbitrary in the place that have no fixed infrastructure and all of the transmission links are established through wireless medium. MANETs are a kind of wireless ad-hoc network. Each node in a MANET is free to move independently in any direction leads to changing its links to other nodes frequently. Each node operates as an end system and also as a router to forward packets. The primary challenge in building a MANET is equipping each node to continuously maintain the information required to properly route traffic. Wireless ad-hoc network is promising in solving many challenging real-world problems like military field operation, communication in emergency response system and oil drilling and mining operation. Wireless mobile ad-hoc networks are vulnerable to many security attacks because of shared channel, insecure operating environment, lack of central authority, limited resource availability, dynamically changing network topology, resource constraints. MANET’s open issues are like security problem, finite transmission bandwidth, abusive broadcasting messages, reliable data delivery, dynamic link establishment and restricted hardware caused processing capabilities emerges into new horizon of different research areas. Wormhole Attack In MANETs, each node communicates directly with its neighboring nodes…

Black-hole Attack in MANET
Networking , Technology & Science / August 17, 2017

Mobile Ad-hoc Network(MANET) Attack Wireless networks can be basically either infrastructure based networks or infrastructure less networks. The infrastructure based networks uses fixed base stations, which are responsible for coordinating communication between the mobile hosts (nodes). The ad hoc networks falls under the class of infrastructure less networks, where the mobile nodes communicate with each other without any fixed infrastructure between them. An ad hoc network is a collection of nodes that do not rely on a predefined infrastructure to keep the network connected. So the functioning of Ad-hoc networks is dependent on the trust and co-operation between nodes. Nodes help each other in conveying information about the topology of the network and share the responsibility of managing the network. Hence in addition to acting as hosts, each mobile node does the function of routing and relaying messages for other mobile nodes. Black-hole Attack Security in a MANET is an essential component for basic network functions like packet forwarding and routing.  Before we survey the solutions that can help secure the mobile ad hoc network, we think it necessary to find out how we can judge if a mobile ad hoc network is secure or not, or in other words,…

Mobile Ad-Hoc Networks
Networking , Technology & Science / August 10, 2017

MANET Overview The new generation network that includes the wireless devices which are able to move freely or independently in random directions and speed with regulation of any authority and connected through the wireless links can be termed as ad-hoc networks. Fast expansion of wireless communication technology and the broad usage of mobile communication tools, wireless ad hoc networks are getting more and more consideration. Nowadays, wireless ad hoc networks are not only used in military, but also been applied to civilian application, including home area networks, mobile communication networks, and so on. With the widespread rapid development of computers and the wireless communication, the mobile computing has already become the field of computer communications in high-profile link. An Ad hoc network is a collection of mobile nodes, which forms a temporary network without the aid of centralized administration or standard support devices regularly available as conventional networks. These nodes generally have a limited transmission range and, so, each node seeks the assistance of its neighboring nodes in forwarding packets and hence the nodes in an Ad hoc network can act as both routers and hosts. Thus a node may forward packets between other nodes as well as run user applications….

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