Re: Defeating DoS Attacks Through Accountability

> I'll put it this way: filtering should be done against blocks that a > customer can announce, not against blocks that a customer is actively > announcing. If you're filtering purely against current advertisements, > you're bound to break something sooner or later. Good theory. But what one public source do all the ISP agree to validate the authority to announce? I can't ever see this problem being solved while legacy (swamp) space exists and the organisations using it can just appear anywhere. Mark.