Distributed Denial of Service (DDoS) is a common attack in recent years that can deplete the bandwidth of victim nodes by flooding packets. Based on the type and quantity of traffic used for the attack and the exploited vulnerability of the target, DDoS attacks are grouped into three categories as Volumetric attacks, Protocol attacks and Application attacks. The volumetric attack, which the pro...

As evinced by a series of high profile attacks, denial of service (DoS), or prevention of legitimate access to resources, is a threat that demands attention. Of particular concern are distributed attacks, in which an adversary recruits several computers to aid in the attack. The first major distributed denial of service (DDoS) attack brought down the University of Minnesota’s network for three ...

A high profile internet server is always a target of denial-of-service attacks. In this project, 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 serve...

In Distributed denial of service (DDOS) attack, an attacker may use your computer to attack another computer by taking security weakness an attacker could take control of your computer. He could then force your computer to send huge amounts of data to a website. Or send spam particular email address. The “Attack” is distributed because the attacker is using multiple computers including yours to...