Re: first succesful (lab) spoof of a fully source port randomized server reported

Paul Vixie <vixie@isc.org> Sun, 10 August 2008 18:37 UTC

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From: Paul Vixie <vixie@isc.org>
To: Alex Bligh <alex@alex.org.uk>
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Subject: Re: first succesful (lab) spoof of a fully source port randomized server reported
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> >> add     pipe 1  udp     from any 53 to 204.152.188.20 in
> >> pipe 1  config  mask src-ip 0xffffffff buckets 32768 bw 56Kbit/s queue 1

> ...I think we've just succeeded in converting a poisoning attack into a
> DoS vector. Just spoof the IPs of the root nameservers, or NS for
> google.com or whatever. I realise DoS of root nameserver access is
> probably less dangerous that poisoning then, but...

there are easier ways to DoS a nameserver.  this isn't an exciting new vector.

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