[nsp-sec] NetSol / WorldNIC nameservers continue to be down
Bill Woodcock
woody at pch.net
Fri Jan 23 16:32:35 EST 2009
A bit more detail on this.
Note that NetSol hasn't been able to get any of their folks approved
to be on NSP-Sec yet, to the best of my knowledge, but they'd like to.
NetSol servers are receiving valid UDP/53 queries for extremely long
domain names which do not exist. The attack is taxing the CPUs of
their servers rather than their network bandwidth. They've trying to
finish up writing code to distinguish this type of query from ordinary
nxdomain.
I've asked them to begin compiling a frequency-distribution of source
IPs as soon as that's done.
-Bill
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