Re: DNS cache poisoning attacks -- are they real?

[Florian Weimer <fw () deneb enyo de>]

* Brad Knowles:

> At 1:08 PM +0200 2005-03-29, Florian Weimer wrote:
>
> >  BIND accepts non-authoritative answers if their additional section
> >  looks a bit like a referral.  I don't tink that this check is
> >  deliberately lax, but stricter checks are simply harder to do on this
> >  particular code path.
>
>       BIND explicitly assumes that there might be upstream nameservers 
> you may talk to that may be answering from cache.

Really?  I can't get it to work reliably.  Can you share an example
where delegation to a non-authoritative caching resolver works,
without the need for special seeding of the caching resolver?

Your posts to nanog () merit edu aren't distributed by the mailing list,
BTW.