International Journal of Engineering and Advanced Technology (IJEAT)
Distributed Denial of Service (DDoS) Attack is a poisonous threat to the users' security professionals. DDoS Attack is defined as the attack which targets one or more systems using multiple systems which are compromised usually by Trojan horse at the same instance of time. DDos Attack does not allow legitimate users to access their resource and their services by taking advantage of the system vulnerability. DDoS Attack is independent of the protocols used. The goals of DDoS Attack are Twofold. First it overloads the server which may lead to crash and the second goal is to acquire and steal the bandwidth by generating a large scale of traffic.