DNSSEC auto-dnssec issue bind-9.7.2-P3

Mark Andrews marka at isc.org
Tue Jan 25 22:20:56 UTC 2011

In message <C964B3CD.13A61%kalman.feher at melbourneit.com.au>, Kalman Feher write
> On 25/01/11 4:10 PM, "Alan Clegg" <aclegg at isc.org> wrote:
> > On 1/25/2011 9:51 AM, Kalman Feher wrote:
> > 
> >> If the nsec3param has been removed, the automated signing will be weird if
> >> you are using nsec3 keys. I havent tested this scenario, since it isnt
> >> really a working scenario.
> > 
> > There is no such thing as an "nsec3 key".
> Sorry, I was a little sloppy with my vernacular.
> I meant the algorithm used to create the keys in question. ie using -3 in
> dnssec-keygen. 

And *all* keys that support NSEC3 are also NSEC capable.  There
isn't such a thing as a NSEC3 key.  There are NSEC3 capable keys
and keys that are not NSEC3 capable.  All keys are NSEC capable.

As for the NSEC3PARAM going away it is only supposed to exist in a
*signed* zone and you are attempting to add it to a unsigned zone.

The key timing are there for managing keys in a already signed zone.
You are attempting to use them to start signing the zone which
requires as whole different set of steps to be done.

To get named to convert a unsigned zone to a signed zone with NSEC3
use nsupdate to add the DNSKEYs and NSEC3PARAM record in the same
UPDATE request.

> > If you auto-sign a zone that does not contain an NSEC3PARAM record, the
> > zone will be signed using NSEC.
> That was the observed behaviour of the OP, which wasn't their preference.
> Hence the need to add and retain said nsec3param in this instance.
> > 
> > [note that I'm leaving the rest of that mail to be responded to by
> > someone with more intimate knowledge of the auto-signing mechanism]
> > 
> > AlanC
> > 
> > _______________________________________________
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> > bind-users at lists.isc.org
> > https://lists.isc.org/mailman/listinfo/bind-users
> -- 
> Kal Feher 
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Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org

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