Abstract
Mobile Ad hoc Networks (MANET) is a part of wireless networks. No wires and fixed routers are used in this type of network. It is not everlasting network; it is the short term network. Nodes has the capability to self organize themselves and it follows infrastructure less architecture. Network is formed by number of nodes moving in an inconsistent manner. They do not form any topology. Few examples of Ad hoc wireless network devices are Laptops, palmtops, smart phones etc [6]. And every nodes further acts as routers which transfers packet from one node to another node. Security is one of the main issues in Mobile Ad hoc Network. From last few years security problems in MANETs are gaining much attention. As there are many security vulnerabilities in MANET and which is the reason that it is not safe from attacks. There are many types of MANET like VANET (Vehicular Ad hoc Network), SPANs (Smart Phone Ad hoc Networks), iMANET (Internet based Mobile Ad hoc Network), Tactical MANET. The aim of this paper is to discuss about different types of attacks in Ad hoc network and some of the techniques by which these attacks can be protected.
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