Paper Title
Mobile Ad Hoc Networks-An Overview

Wireless networks use radio frequencies in air to transmit and receive data Wireless networks are formed of routers which are responsible for forwarding packets in the network. A wired network relies on physical cables to transfer data. The communication in a wireless network can be either wired or wireless. Wireless communication does not have the constraint of physical cable. This is one of the advantages of a wireless network.Mobile Ad Hoc Network (MANET) is a collection of wireless mobile nodes .Theyare characterized by multihop wireless connectivity, infrastructure less environment and frequently changing topology. Since the network topologychanges frequently, efficient adaptive routing protocols are used. As the network is wireless, security becomes the major issue in Mobile Adhoc Networks.The transmission of data is disrupted due to behavior of malicious nodes which results in attacks such as modification, fabrication, impersonation and denial of service attacks. This paper gives an overview of Mobile Ad Hoc Networks. Keywords- MANETs, Routing Protocol, Black hole attack, AODV