Distributed Denial of Service (DDoS) attacks have become a large problem for users of computer systems connected to the Internet. DDoS attackers hijack secondary victim systems using them to wage a coordinated large-scale attack against primary victim systems. As new countermeasures are developed to prevent or mitigate DDoS attacks, attackers are constantly developing new methods to circumvent ...

-Cloud Computing makes computing real as a tool and in the form of sevices.Cloud Computing is simply defined as a type of computing that depends on sharing computing resources rather than having local servers or personal devices to handle applications. Cloud Computing is typically a metaphor for the internet. Cloud Computing, we observe an increasing need for cloud Benchmarks, In order to asses...

A high profile internet server is always a target of denial-of-service attacks. In this paper, we propose a novel technique for protecting an internet server from distributed denial-of-service attacks. The defense mechanism is based on a distributed algorithm that performs weight-fair throttling at the upstream routers. The throttling is weight-fair because the traffics destined for the server ...

Cloud defines a new age of computing solution that provides services to customers with its unique features of agility and multi-tenancy. As the critical resources are hosted at cloud provider’s end, security is a big challenge in cloud computing. If the cloud environment is compromised and attackers get the access of core data centers, the availability of the critical resources becomes a big co...

Denial of Service (DoS ) attacks represent, in today’s Internet, one of the most complex issues to address. In this paper we present a novel approach to deal with Distributed DoS (DDoS ) attacks in the Internet. We propose a model for an Active Security System, comprising a number of components that actively cooperate in order to effectively react to a wide range of attacks. Functional to our a...

Denial of Service (DoS) attacks and Distributed Denial of Service (DDoS) attacks accounted for more losses than Internet financial fraud and viruses combined (CSI/FBI 2003). The Internet has been exposed as being particularly vulnerable to Denial of Service Attacks. This has stimulated research into DDoS and the consequent development of many techniques which aim to control them. This paper aim...

Cloud computing has become popular and a huge platform for computing where large number of data are available online. Nature of cloud computing is distributed, due to this kind of nature they have become easy target for attackers to exploits the security vulnerability. Availability of data is most important part of cloud computing and even for economic growth of the society. Attack name Denial ...

Cloud computing has been considered as one of the crucial and emerging networking technology, which has been changed the architecture of computing in last few years. Despite the security concerns of protecting data or providing continuous service over cloud, many organisations are considering different types cloud services as potential solution for their business. We are researching on cloud co...

Cloud computing has started to gain acceptance for adoption and implementation among organizations, however, this new technology area has already started to deal with security, performance and availability challenges. Within Cloud Security issues being paramount for the corporates, private enterprises, the denial of service attacks are rated as the highest priority threat to the cloud environme...

Cloud Security is one amongst most significant problems that have attracted plenty of analysis and development effort in past few years. Notably, attackers will explore vulnerabilities of a cloud system and compromise virtual machines to deploy additional large-scale Distributed Denial-of-Service (DDoS). DDoS attacks sometimes involve early stage actions like multi-step exploitation, low freque...