[ale] Locating the name of public facing machines within a domain

[Brian Mathis]

You can try to perform a zone transfer, which would retrieve the full DNS
database, but it's unlikely to work since a correctly-configured DNS setup
should only allow transfers to authorized hosts.  Not all DNS servers are
setup correctly though, so you can try it:
    dig axfr myschool.edu

You could try to query each DNS server, by doing something like this:
    dig myschool.edu
then, for each name server (as indicated by the NS in the result), do
    dig axfr @ns1.myschool.edu myschool.edu

Otherwise, I'm not aware of any other way to find out every hostname name
in a domain.


❧ Brian Mathis


On Thu, Aug 8, 2013 at 11:17 AM, Tom Freeman <tfreeman at intel.digichem.net>wrote:

>
> I almost guarentee that the Subject line should be better phrased...
>
> In any event... I has been long enought since I needed to much with DNS
> type stuff that if I ever knew the answer, I have forgotten that I knew. I
> need/want to locate _all_ of the public internet facing machine names of my
> employer in order to locate the correct URL address for what I need to do.
> (Yes - asking support is feasable, but they are over loaded and I know that
> the machine name is related to the service I want)
>
> An example might help (I hope so at least). Say I want to get into the old
> Moodle system (which is being retired, but isn't shut down quite yet). Is
> it moo1.myschool.edu, moodle1.myschool.edu, oldmoo.myschool.edu or some
> other variant? I don't need/want the IP addresses, but the machine names.
>
> Support people at work are sadly overloaded, so response times are rising
> at the moment. I'd like to be able to dig my way out of this challenge.
>
> So far - I haven't asked the Google a correctly formed question to return
> anything semi-useful in the first 100 + responses. I have looked at the dig
> man page, and that seems like it should work, but haven't managed to wrap
> my head around things yet.
>
> Thankyou one and all for the use of your bandwidth!
>
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