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RE: Above.net problems ??

  • From: Arjan Hulsebos
  • Date: Wed Nov 26 12:59:19 2003
Title: RE: Above.net problems ??

> Is there any relationship between this "europeanwide"
> above.net failure and the huge amount of
> DNS requests to lockup.zonelabs.com which failed that every
> ISP (at least in France) seem to
> have encountered last night ?
> The zonelabs.com zone is hosted on Above.net NS servers.

The Netherlands were hit as well. We saw a massive flood of queries for lockup.zonelabs.com, too. It performed a nice DoS on our client name servers.... :-(

You'd think that an unresponsive nameserver would be flagged dead, and such information be cached. Does anyone know whether that's actually done in Bind 8.3.4? Or perhaps not by default?

Cheers,

Arjan H


Not even a clue-by-four would work with this clown.
________________________________
dr. Arjan Hulsebos
Security Engineer
Essent Kabelcom, @Home Benelux department
1042 AX Amsterdam
Email: [email protected]
Tel:   +31 20 88 55 407
Mob:   +31 6 21 548 777