ABSTRACT
In the mobile ad hoc networks the major role is played by the routing protocols in order to route the data from one mobile
node to another mobile node. But in such mobile networks, routing protocols are vulnerable to various kinds of security
attacks such as blackhole node attacks. The routing protocols of MANET are unprotected and hence resulted into the
network with the malicious mobile nodes in the network. These malicious nodes in the network are basically acts as
attacks in the network. In this paper, we modify the existing DSR protocol with the functionality of attacks detection
without affecting overall performance of the network. Also, we are considering the various attacks on mobile ad hoc
network called blackhole attack, flooding attack and show the comparative analysis of these attacks using network
simulator ns-2.
Keywords: - MANET, blackhole, flooding, DSR, ns-2.