On Tue, 7 Oct 1997, Karl Denninger wrote:
No. This was a transmission of 1K packets and was not in the style of any previously-seen attack that I'm aware of. Its a new thing.
There was no attempt to SYN flood, or hit broadcast addresses, or use source-routing. All of that is protected against fairly well here. This was a simple "the machines are on a 10Mbps pipe, so hit them with 30Mbps of traffic and flood their NIC ports to the point that they're useless".
That's exactly what we saw here as well, except we did see some broadcast traffic. They hit us with so much traffic that our 10Mbps link was useless. The offending sites I got were 192.195.100.1, 128.132.45.105, 167.152.96.78, but according to the customer they believe those to be forged. I'm almost certain that at least some of these sites had to be used, as the source routed traffic should have been stopped at the router. This did stop the traffic from coming through, but it didn't stop it from killing the link once it got here. Joe Shaw - jshaw@insync.net NetAdmin - Insync Internet Services