With all these ways to stop DoS attacks, you might think DoS attacks would be no more difficult to handle than spam. Wrong. Thanks to DDoS attacks that are so simple that any malcontent can co-op dozens or hundreds of machines to launch DoS assaults on your systems.
Sheer volume alone can wash down your barricades and leave your network connection flooded with garbage. With tools like Tribe Force Network (TFN), Trin00 and Stacheldraht, anyone can plant DDoS attack zombies in unprotected systems. Later, the attacker sends out the target information, and, presto! Instant DDoS.
These attacks, devised between 1997 and 1999, are easy to spot. Newer DDoS attacks, however, use "pulsing zombies." Instead of launching brute force attacks, these send waves of low-bandwidth traffic, which their masters hope will stealth their way past network alarms set for massive attacks.
