[lug] DNS config question

[John Hernandez]

I interpret your question differently than Brad.  Do you want to know how to delegate reverse lookups for networks smaller than /24?  If so, have a look at:

ftp://ftp.isi.edu/in-notes/rfc2317.txt

And a previous thread:

http://archive.lug.boulder.co.us/bymonth/2001.02/msg00236.html

Cheers,
John

-- 
Anders Knudsen wrote:
> 
> Is there a way in the DNS config file to specify the nameserver should only
> respond to queries for a given range of IP #'s (i.e., with a netmask?)
> 
> Here is my setup.
> 
> Network is 192.168.6.193/27 (netmask of 255.255.255.224)
> That is, I want DNS to respond to queries from 192.168.6.193 to
> 192.168.6.224 (31 ip #s).

^^ This is the confusing language, by the way.  Usually "respond to queries from" implies the use of some type of ACL.

> 
> If I do this: (I'm using bind4 btw)
> 
> primary    mydomain.com    db.mydomain
> primary    6.168.192.in-addr.arpa    db.192.168.6
> 
> That's for the entire range of 192.168.6.0 through .255.
> 
> So, how do I limit it? How do I specify a "netmask" in the config/boot file?
> 
> TIA,
> -Anders.
> 
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-- 

  - John Hernandez - Network Engineer - 303-497-6392 -
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