Multiple DNS implementations vulnerable to cache poisoning

Christopher Morrow morrowc.lists at
Thu Jul 10 15:08:49 UTC 2008

On Thu, Jul 10, 2008 at 10:22 AM, Wes Hardaker <wjhns61 at> wrote:
>>>>>> On Wed, 9 Jul 2008 22:55:05 -0400, "Christopher Morrow" <morrowc.lists at> said:
>>>> aside from just getting some cctlds signed, i will be interested in the
>>>> tools, usability, work flow, ...  i.e. what is it like for a poor
>>>> innocent cctld which wants to sign their zone?
>>> If there is sufficient interest, we could do a bar bof to describe some of
>>> the tools IANA has...
> CM> I think Sandy Murphy or other Sparta folks have presented some of the
> CM> work they've done on this... Perhaps finding one/some of them and
> CM> having a more operations focused presentation in LAX or ... is a good
> CM> idea as well?
> The tools that Sparta developed (and made freely available via an open
> source packaged that is BSD licensed) can be found at
> .  In particular, signing a zone is

yup, and that's helpful stuff.

> intended to be easy using "zonesigner" (requires bind tools):
>  zonesigner -genkeys

great... what about a zone that's getting slaved off of a silent
master at the customer site? how does that get integrated? (customer
does the dns-sec magic, my server validates the updates... config
examples help here)

> Then next time, just leave off the -genkeys argument.
> (there is also a daemon called "rollerd" that can auto-sign on a regular
> basis and help automate key-rollever timing)

nice, extra load induced on server? impact on the number of zones I
can serve? tinydns compatible? db-backended NS daemon support?

> The full list of tools and tutorials sectioned into different needs can
> be found here:

great :)

> All for free.  Don't you hate those ??biased??, freely-available,
> source-code-supplied-so-you-can-change-it, BSD-licensed open source
> packages?
> --

I like free... as long as it's the hammer I need for the nails I have.


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