Re: DNS records for a firewall NAT pool

[Barney Wolff <barney () databus com>]

On Tue, Jul 29, 2003 at 04:55:14PM -0500, Frank Knobbe wrote:
> On Tue, 2003-07-29 at 12:17, Barney Wolff wrote:
> > For example, 66.114.72.185 -> p72-185.acedsl.com -> 66.114.72.185 , done
> > by my ISP.
>
> Adding to that, in most cases you get can get away by entering the IP
> address as the host name in your in-addr.arpa zone. That way the IP
> address 1.2.3.4 can be mapped to the _hostname_ (as _string_) 1.2.3.4,
> which of course is typically resolved back to the IP address.
>
> So above example would read:
>
> 66.114.72.185 -> "66.114.72.185" -> 66.1114.72.185   :)

I'd be very wary of dots in a hostname, and of hostnames beginning
with a digit *.  FreeBSD's gethostbyname seems to accept a dotted-quad
as a name, but I'm not sure that's universal.

* Names starting with a digit are valid in dns but not valid hostnames.
Some systems care, some don't.

-- 
Barney Wolff         http://www.databus.com/bwresume.pdf
I'm available by contract or FT, in the NYC metro area or via the 'Net.
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