There are more chances nowadays for a network to be attacked The common attacks are DoS and DDoS attacks. They are mainly responsible for causing disturbances for the network. There are so many mechanisms in preventing these attacks like packet marking. This packet marking is mainly used to find the source of an attack. While solving this process, the main problem is to minimize the number of IP packets used in the tracing of the attacks. The number of packets that are beginning from the individual sources is not adequate to trace back the aggressors and consequently, a proficient bundle checking plan is required in this unique circumstance. This paper focusses on finding the source of the attack using the less number of hops counts. For implementing this project we are mainly using NS2 and prove that it is more efficient than existing algorithms of finding the attacker.