denial

If you're at all interested in copyright, the movie industry, BitTorrent, or Bram Cohen (its creator), I recommend reading The BitTorrent Effect from the January 2005 issue of Wired.

A Distributed Denial of Service (DDoS) is an attack on a network which is designed to bring it to a halt. This is done by sending useless traffic to a specific service/port on a server. The amount of traffic sent would overwhelm the service, so that legitimate traffic would be dropped or ignored.

Distributed Denial of Service (DDOS) attacks are a significant threat to the availability of any company's networks and systems. In the last 18 months, the press has reported many high profile DDOS attacks costing the victims many hundreds of thousands of pounds.

On August 10th I had the opportunity to talk about (Distributed) Denial of Service (DDoS) at the Megabit 2002 event. I wanted to show a new way to use standard routers and protocols to combat denial of service. Unfortunately there wasn't enough time to really prepare the test setup. I was unable to show conclusively that it works. I was able to explain how it is supposed to work. I'm going to repeat that part here and then talk about the Cisco router configurations that make it all happen.

These days there are significant increases in network-based attacks and among them is the dreaded Denial-of-Service attack, which can leave your systems either unusable or unreachable. Although these attacks don't make the news as often as they did when Yahoo.com was taken down by a massive Distributed Denial of Service attack, they are still prevalent.