Date Added: Mar 2013
Distributed Denial-of-Service attack (DDoS attack) is a machine which makes the network resource unavailable to its intended users. DoS attack consists of the efforts of one or more people to interrupt or suspend the service of a host connected to the Internet. The discovery of this attack is necessary to protect the network infrastructure but it is very challenging to detect such attack. In this paper, the authors discuss the architecture, algorithm of FireCol where the core of FireCol is located at the Internet Service Provider level (ISPs) which consist of Intrusion Prevention System (IPS).The IPSs forms a virtual protection ring around the host and exchange the traffic information. With that information the IPS came to know the detection of DDoS attack.