Forward Lookup

[Kevin Darcy]

I think this person is confused. nslookup automagically turns a forward
(name-to-address) lookup into a reverse (address-to-name) lookup whenever it
recognizes the queried name as being an IP address.

Have them try turning on "debug" in nslookup, which will reveal that nslookup
is actually making a *reverse* lookup under the covers. Then, hopefully, they
will realize the error of their ways...


- Kevin

Brooklyn Linux Solutions CEO wrote:

> Can someone tell me exacctly what forward lookup means as it
> is being used in this corespondance with sprint?
>
> _____________________________________________________________
>
> Hi
>  Fred,
> >       Confirmed with System Administration problem lies with ARIN, until
> > they finish upgrading their database we will have problems propagating
> > our dns info to some dns servers on the internet. I have a work around,
> > basically whats needed is to have the name server for the ip address
> > that you can't get to do a forward lookup on your hostname. Example :
> >
> > C:\>nslookup - 208.0.204.50
> > Default Server:  named1.tmm.net
> > Address:  208.0.204.50
> >
> > > cpe-24-221-189-144.ca.sprintbbd.net
> > Server:  named1.tmm.net
> > Address:  208.0.204.50
> >
> > Non-authoritative answer:
> > Name:    cpe-24-221-189-144.ca.sprintbbd.net
> > Address:  24.221.189.144
> >
> > > 24.221.189.144
> > Server:  named1.tmm.net
> > Address:  208.0.204.50
>
> > Name:    cpe-24-221-189-144.ca.sprintbbd.net
> > Address:  24.221.189.144
> >
> > Now you can ftp to 208.0.204.174 with no problem. The dns server will
> > eventually refresh it's cache, most likely 3-5 days. Then these steps
> > will have to be done again to get to the site. Try ftp to the site now,
> > should work ok
>
> Ruben
> --
> Brooklyn Linux Solutions
> http://www.mrbrklyn.com
> http://www.brooklynonline.com
>
> 1-718-382-5752