Concepts of Denial-of-Service Attack & Distributed Denial of Service
For better understanding of Denial-of-Service Attack & Distributed Denial of Service ( DoS/DDoS ) attacks , one must be familiar with their concepts beforehand. This module discusses about what a DoS attack is, what a DDoS attack is, and how the DDoS attacks work. What is a Denial-of-Service Attack? DoS is an attack on a computer or network that reduces, restricts, or prevents accessibility of system resources to its legitimate users. In a DOS attack, attackers flood a victim’s system with non-legitimate service requests or traffic to overload its resources, bringing the system down, leading to unavailability of the victim’s website or at least significantly slowing the victim’s system or network performance. The goal of a DoS attack is not to gain unauthorized access to a system or to corrupt data ; it is to keep the legitimate users away from using the system. Following are the examples of types of DoS attacks: Flooding ...