Cloud Computing: Four ways to defend against DDoS attacks
September 17, 2013
Grazed from NetworkComputing. Author: Sean Leach.
Given that Distributed Denial of Service (DDoS) attacks are becoming more frequent, it is a good time to review the basics and how you can fight back. A DDoS is an attack method used to deny access for legitimate users of an online service. This service could be a bank or e-commerce website, a SaaS application, or any other type of network service. Some attacks even target VoIP infrastructure.
An attacker uses a non-trivial amount of computing resources, which they either built themselves or, more commonly, by compromising vulnerable PC’s around the world, to send bogus traffic to a site. If the attacker sends enough traffic, legitimate users of a site can’t be serviced…
For example, if a bank website can handle 10 people a second clicking the Login button, an attacker only has to send 10 fake requests per second to make it so no legitimate users can login. There are a multitude of reasons someone might want to shut a site down: extortion, activism, competitive brand damage, and just plain old boredom…
Read more from the source @ http://www.networkworld.com/news/tech/2013/091713-defending-against-ddos-273919.html