Date Added: Apr 2013
Distribute Denial of Service (DDoS) attacks can inflict chaos on any susceptible web site. The goal of these attacks is to consume the network bandwidth and reject services to legitimate users of the targeted systems. Hence the client loyalty and buoyancy can be eroded due to annoyance of slow site performance .The attacks at the layer-7 are more harder to alleviate since they deny the service without causing the consumption of available network bandwidth when compared to network layer DDoS attacks. Several mechanisms have been introduce to alleviate application layer DDoS attacks in which the attackers are identified and blocked after reaching the server.