Abstract:
Mobile Ad Hoc Networks (MANETs) gained lot of importance due to fast growth of the businesses and used in different applications such as military, entertainment, commerce, emergency services etc. Because of openness and decentralization feature of the MANET, nodes of the MANET can be vulnerable to malicious entities. Hence, anonymity becomes one of the important aspects in MANET. In last few years, a lot of research has been carried out by different researcher to prevent the anonymity of the MANET. Different routing protocols have been evolved such as GSPR, AO2P, ALARM, PRISM and ASR to secure the anonymity of the MANET. But all of these protocols have some limitations regarding providing complete anonymity of source, destination or routes and also involving high cost. To overcome above issues ALERT protocol is evolved which is distinguished by its low cost and anonymity protection for sources, destinations, and routes. But ALERT protocol is not providing security against the active attacks, so in the proposed work we have decided to make the strategy to prevent the DoS and Man in the middle attacks on ALERT by using Hash function with SHA-1 algorithm.