Catchall BIND configuration for DNS parking service

[Mark Andrews]

Named really isn't designed to be a catch all server.  It's designed
to serve the configured zones and only the configured zones.  That
being said the later versions of named allow zones to be added via
rndc so the configuration effort required to add a new zone is much
lower.

e.g.
	rndc addzone 'example.com { type master; file "parked.domains"; };'

However if even this is too much effort I would just use a specialised
server that has been configured to know which label patterns identify
end user zones and can generate canned responses based on that
indentification.

e.g.
	<label>.com 
	<label>.com.au

Mark

In message <4DF143B2.2090504 at ipfrom.com>, Gianfranco Pra Floriani writes:
> Hello there,
> I'm trying to configure BIND (BIND 9.7.3) as a "catchall" DNS server for a pa
> rking domain service. This is a way to let 
> users/clients park their domains automatically by pointing primary and second
> ary DNS servers there. It should work with ANY TLD 
> (both generic and countrycodes).
> 
> In named.conf, I have created a test zone (for debugging porpuses, will be re
> moved once working):
> 
> zone "working.test" IN { type master; file "parked.domains"; };
> 
> and I have defined the "." zone as master:
> 
> zone "." IN { type master; file "parked.domains"; };
> 
> So, as you see, both working.test and "." use the same zone.
> 
> The parked.domains zone looks like this:
> 
> $TTL 86400
> ; parked.domains zone
> @               IN      SOA     ns1.parkingdomini.com. postmaster.ns1.parking
> domini.com. (
>                  2011052800
>                  86400
>                  3600
>                  604800
>                  86400 )
>                  NS      ns1.parkingdomini.com.
>                  NS      ns2.parkingdomini.com.
> 
>                  MX      100 mail.parkingdomini.com.
>                  IN      A       1.2.3.4
> *               IN      A       1.2.3.4
> 
> Here is the problem:
> If I explicitly declare a zone in named.conf with "parked.domains" as zonefil
> e, it behaves correctly. But as "catchall" is not 
> anwering correctly.
> If I run:
> 
> dig working.test @localhost ANY
> 
> the ANSWER SECTION IS:
> 
> ;; ANSWER SECTION:
> working.test.           86400   IN      SOA     ns1.parkingdomini.com. postma
> ster.ns1.parkingdomini.com. 2011052800 86400 3600 
> 604800 86400
> working.test.           86400   IN      NS      ns1.parkingdomini.com.
> working.test.           86400   IN      NS      ns2.parkingdomini.com.
> working.test.           86400   IN      MX      100 mail.parkingdomini.com.
> working.test.           86400   IN      A       1.2.3.4
> 
> while, if I dig anything else, the ANSWER SECTION IS:
> 
> ;; ANSWER SECTION:
> somethingelse.test.     86400   IN      A       1.2.3.4
> 
> Why? The zone defined is exactly the same.
> 
> Any help is welcome.
> Thank you
> gian
> 
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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