DISTRIBUTED DENIAL OF SERVICES ATTACKS AND THEIR PREVENTION IN CLOUD SERVICES

Distributed Denial of services (DDOS) attacks are one of the most famous attacks that affect the availability of a service making it a serious problem especially when it comes to cloud computing as it is becoming a bigger part of our lives. Throughout this paper, we first discussed the DDOS types, categories, and approaches in terms of the targeted area of the cloud or the intensity of the attacks whether it’s the normal DDOS, the Low-rate DDOS, or Economic-DOS (EDOS). We then presented a comparative analysis between the recent studies discussing the DDOS attacks in cloud. Prevention of DDOS in cloud computing is the first step in the defense mechanism followed by detection and mitigation. The prevention of the DDOS attacks is the foremost important step in protecting the cloud from DDOS which is achieved through challengeresponse, hidden servers, and restrictive access approaches. We also provided a summary of the recent studies discussing the different prevention techniques, approaches, and frameworks. The main purpose of this paper is to provide a road map of the current situation of DDOS attacks and how they take place, why they take place and its prevention techniques in cloud computing environment focusing on the true protective prevention stage