How does one defend against DoS attacks?
Good question. Oh, you want an answer? Well, it often isn’t easy to defend against DoS attacks, but there are a few things you can do. For defending against your Ping of Death style of attacks (malformed packets that crash a service or the system itself), the best line of defense is to keep your systems patched up, and to put a firewall between yourself and the Internet that is patched up. This really is the best method. As far as bandwidth stealing attacks, such as floods, there is not a lot you can do. Packetstorm ran a contest that posed the question as far as distributed attacks go, and several of the concepts in numerous papers can be applied across the board to any DoS attack.
