Secured Network from Distributed DOS through HADOOP

The purpose of this paper is to study the characteristics of DDOS attack, various models involved in attacks and to provide alternative. To defences mechanism with their improvements to combat DDOs attack. Recent DDOS attack has demonstrated horrible destructive power by paralyzing web servers within short time. DDOs detection method based on hadoop that implements an Http Get Flooding detection algorithm in mapreduce on the distributed computing platform. An assout on a network that floods it will so many requests that regular traffic is either solved or completely interrupted. Hackers use distributed DDOS attack & leaves hundreds and thousands of bots to overwhelm in terms of bandwidth & reduce the services that are rendering to the user.