UDP port 80 DDoS attack

John Kristoff jtk at cymru.com
Fri Feb 10 10:53:49 CST 2012


On Sun, 5 Feb 2012 18:36:13 -0500
Ray Gasnick III <rgasnick at milestechnologies.com> wrote:

> Only solution thus far was to dump the victim IP address in our block
> into the BGP Black hole community with one of our 2 providers and
> completely stop advertising to the other.

Drew mentioned udp.pl and I also it could have been this script running
on some compromised Unix-based host(s) as well.  If the traffic did not
appear to be widely distributed, that is, not spoofed, then this is
even more likely.  If that was the case, filtering based on the sender
address(es) may help better mitigate the attack without taking the
target entirely offline for everyone else.

John



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