O'Reilly Network: Preventing Distributed Denial of Service AttacksMar 12, 2000, 17:05 (0 Talkback[s])
(Other stories by Terry Dawson)
"Let's take a Linux-focused look at denial of service attacks and what we can do as responsible Internet citizens to assist in preventing them."
"A denial of service attack is any act intended to cause a service to become unavailable or unusable. In an Internet environment, a service might be an application such as a web or mail server, or a network service like routing of datagrams...."
"A distributed denial of service attack exploits several machines to make the attack. Distributed denial of service attacks are the most effective and insidious because they can generate more traffic from more sources. This makes it much harder to identify the attack's source, and more difficult to resolve."