Identification and Prevention of Smurf Attack using Packet capture Analysis

Among the several internet attacks that on security, denial of service (DoS) has the most damaging impact type of attack .DoS attacks pose a significant threat to the Internet. The Smurf assault is a type of DoS attack. The Smurf Attack is caused by faked traffic flooding the network. The Smurf attack exploits IP protocol flaws by sending ping packets to a large number of network hosts on the internet in order to generate reply packets, resulting in network traffic congestion and system breakdown. Smurf attack initially determined the attack host and then utilizes two steps further: first, it uses the network host address as the source address, creating a large number of ICMP response packets. The packets are then sent out with the Broadcast address, and they are returned to the network assault.