[wplug] reverse dns?

abe rolick571 at duq.edu
Mon Apr 7 21:23:29 EDT 2003


> >just nslookup your IP address, for example if "nslookup
> >www.mydomain.com" returns 123.456.789.23 then if you do "nslookup
> >123.456.789.23" should return www.mydomain.com
> >
> >>Reverse DNS, how does one test for such a thing?
> >>
> >>
> So this would only matter if you're running some server type of service 
> from your linux machine then? Like, as if I had a ftp server setup on my 
> machine?

rdns is the mapping of an ip to its hostname.

coldfire at slimer:~$ host google.com
google.com has address 216.239.51.100
google.com has address 216.239.33.100
coldfire at slimer:~$ host 216.239.51.100
100.51.239.216.in-addr.arpa domain name pointer www.google.com.
coldfire at slimer:~$

the second is an example of the rdns mapping.


abe



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