Security Aspects in Mobile Ad Hoc Networks (MANETs): A Big Picture

Mobile ad hoc networks have inherently different properties than traditional wired network. Mobile ad hoc networks (MANETs) have received drastically increasing interst, partly owing to the potential applicability of MANETs to myriad application. Security is a paramount concern in a mobile ad hoc network because of its intrinsic vulnerabilities. In this paper we review security goal, security challenges, and different types of attacks on MANETs and also try to propos the solution to diffent security threats at layer wise by Reactive routing protocols. Basically we follow some reactive protocols like: Dynamic Source Routing(DSR), Ad Hoc on demand Distance Vector Routing (AODV) and Temporally Ordered Routing Algorithm(TORA). However, we can say that how these protocols can be secured. Keywords/