350 Abstract One of the greatest threats that network security faces nowadays is Distributed Denial of Service attacks. A newer version of the Denial of Service attack, also called Distributed Denial of Service attack or DDoS. In a distributed denialof-service (DDoS) attack, an attacker may use your computer to attack another computer. An attacker may attempt to: “flood” a network and thus redu...

Abnormal variations of traffic are conventionally considered to occur under the condition that traffic rate is abnormally high in the cases, such as traffic congestions or traffic under distributed denial-of-service (DDOS) flood attacks. Various methods in detecting traffic variations at abnormally high rate have been reported. We note that a recent paper by Kuzmanovic and Knightly, which expla...

We propose a method for DDoS detection by constructing a fuzzy estimator on the mean packet inter arrival times. We divided the problem into two challenges, the first being the actual detection of the DDoS event taking place and the second being the identification of the offending IP addresses. We have imposed strict real time constraints for the first challenge and more relaxed constraints for...

The adoption of cloud computing is increasing and its use is becoming widespread in many sectors. As cloud service provision increases, legal and regulatory issues become more significant. In particular, the international nature of cloud provision raises concerns over the location of data and the laws to which they are subject. In this paper we investigate Information Flow Control (IFC) as a po...

Distributed Denial of Service (DDoS) attacks can effect the steady functioning of any network, posing a severe security threat. Concentrated single source DDoS attacks consume huge resources like bandwidth in a very small duration and have direct impact at ISP level, thus making them easily detectable. In contrast, diluted low rate DDoS attacks lead to graceful degradation of network over a lon...

Denial of Service (DoS) and Distributed Denial of Service (DDoS) attacks have emerged as a popular means of causing collection particular overhaul disruptions, often for total periods of instance. The relative ease and low costs of initiation such attacks, supplemented by the present insufficient sate of any feasible defense method, have made them one of the top threats to the Internet centre o...

Nowadays, DDoS is one of the most troublesome attacks. Attackers often penetrate innocent routers and hosts to make them unwittingly participate in such large-scale attacks acting as zombies or reflectors. Also, the Internet consists of autonomous network management units. Organizing these units is helpful in detecting DDoS attacks if several adjacent or nearby network management units could co...