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BugTraq
recursive DNS servers DDoS as a growing DDoS problem Feb 28 2006 11:05AM Gadi Evron (ge linuxbox org) (2 replies) Re: recursive DNS servers DDoS as a growing DDoS problem Mar 25 2006 09:40AM MaddHatter maddhatt+bugtraq (at) cat.pdx (dot) edu [email concealed] (maddhatt+bugtraq cat pdx edu) (1 replies) Re: recursive DNS servers DDoS as a growing DDoS problem Mar 07 2006 05:26PM Ventsislav Genchev (vigour1 gmail com) (1 replies) Re: recursive DNS servers DDoS as a growing DDoS problem Mar 14 2006 11:52AM Robert Story (rstory-l 2006 revelstone com) (1 replies) Re: recursive DNS servers DDoS as a growing DDoS problem Mar 18 2006 12:37AM Michael Sierchio (kudzu tenebras com) |
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>>We discussed recursive DNS servers before (servers which allow to query
>>anything - including what they are not authoritative for, through them).
>>...
>>One of the problems is obviously the spoofing. ...
>
>
> Maybe I'm misunderstanding the problem here (but I don't think so). It
> seems to be the issue is not DNS -- recursive or not, but rather a failure
> to adhere to BCP 38.
> http://rfc.net/bcp38.html
>
> One may get easier/larger amplification from a recursive DNS server,
> but the same problem exists for a non-recursive server. DNS, then, isn't
> really where the problem needs to be fixed.
You are right, to a degree.
Spoofing is indeed the attack vector and it can also be utilized for
NTP, ICMP, etc. It is to blame.
Still, DNS is what's being exploited and in my opinion a broken feature
being exploited needs fixing, or it will be exploited.
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