Date: Wed, 17 Dec 2008 10:54:30 +0000 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: Gary Kline <kline@thought.org> Cc: Peter Giessel <pgiessel@mac.com>, FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: looking for a secondary. Message-ID: <4948DA66.6010906@infracaninophile.co.uk> In-Reply-To: <20081217051959.GD11226@thought.org> References: <20081216234235.GA4593@thought.org> <104079537551833802407591023971219248307-Webmail@me.com> <4E4E9B506F504C4BB0C1713423F970CF@hermes> <20081217051959.GD11226@thought.org>
next in thread | previous in thread | raw e-mail | index | archive | help
This is an OpenPGP/MIME signed message (RFC 2440 and 3156)
--------------enig6CAB458A3A911C0544551F71
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: quoted-printable
Gary Kline wrote:
> well, i've certainly asked more ignorant q's, so hrer goes:
> what is a ``zone''? i do my own dns and have since 04/2001.
A zone is a group of related DNS records all under the same administrativ=
e
control. 'Related' meaning they all end in the same sequence of labels. =
Zone
boundaries are determined pretty much by delegation to another set of DNS=
servers.
So there's a '.org' zone containing primarily the NS records for all the =
domains registered under .org. This is distinct from the 'thought.org'
zone you control and here all the sub-entries like www.thought.org or
plato.thought.org are part of the same zone. It's not an entirely cut an=
d
dried definition, but you can think of a zone as 'the chunk of the DNS sp=
ace
that one person controls.'
> thought.org is my one domain, altho i've got several virtual=20
> websites. =20
'domain' in DNS-speak is any sequence of labels[*] known to the DNS. So
even if the DNS data is a host name, an e-mail address, the name of a
whole network, a crypto key for DKIM or DNSSEC or some aggregate service =
name
hosted across several different servers via SRV records, they're all doma=
ins.
Domains can be absolute (ie. from the root of the DNS) or relative to som=
e
intermediate domain.
ie. 'thought.org' is your only zone, although you've got several domains
within it for virtual websites.
Cheers,
Matthew
[*] And a 'label' is a sequence of characters not including the separator=
character '.' -- a domain is hence a sequence of labels joined together
by '.' characters. It's conceptually like the distinction between filena=
me
and path=20
--=20
Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard
Flat 3
PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate
Kent, CT11 9PW
--------------enig6CAB458A3A911C0544551F71
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature
Content-Disposition: attachment; filename="signature.asc"
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.9 (FreeBSD)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
iEYEAREIAAYFAklI2nMACgkQ8Mjk52CukIzpPQCfYkJEuR/wJcWDv3Pd19KxPoML
LwMAnjRQn4mYnzOhtWZ8kIGc3QEkE7RV
=kO8I
-----END PGP SIGNATURE-----
--------------enig6CAB458A3A911C0544551F71--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4948DA66.6010906>