[Cialug] DNS Reverse Lookup

Tom Sellers tomsellers2001 at yahoo.com
Fri May 15 23:40:47 CDT 2009


Here is the response to using the command that you suggested.  Since I'm new to this I'm not sure what the below tells me.  The section under Authority Section looks a little questionable but not sure what it should look like.

Does this tell you anything of value?

tsellers at bluto-laptop:~$ dig -x 192.168.1.1

; <<>> DiG 9.5.0-P2 <<>> -x 192.168.1.1
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 62144
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;1.1.168.192.in-addr.arpa.	IN	PTR

;; AUTHORITY SECTION:
168.192.in-addr.arpa.	10800	IN	SOA	prisoner.iana.org. hostmaster.root-servers.org. 2002040800 1800 900 604800 604800

;; Query time: 486 msec
;; SERVER: 192.168.1.9#53(192.168.1.9)
;; WHEN: Fri May 15 23:36:23 2009
;; MSG SIZE  rcvd: 119


--- On Fri, 5/15/09, Matthew Lechleider <matthew at lechleider.com> wrote:

> From: Matthew Lechleider <matthew at lechleider.com>
> Subject: Re: [Cialug] DNS Reverse Lookup
> To: "Central Iowa Linux Users Group" <cialug at cialug.org>
> Date: Friday, May 15, 2009, 11:33 PM
> Try dig with the flag -x for reverse
> lookup.
> 
> dig -x IP
> 
> 
> Tom Sellers wrote:
> > I have set up a DNS server on my home network and
> although it resolves machine names to IP addresses just fine
> I can't seem to make it perform the reverse lookup
> properly.
> >
> > Below is an example and the DIG information on my DNS
> server.
> >
> > Can anyone shed some light on where I have gone wrong
> here?
> >
> >
> ------------------------------------------------------------------------
> >
> > tsellers at bluto-laptop:~$ nslookup gw
> > Server:       
> 192.168.1.9
> > Address:    192.168.1.9#53
> >
> > Name:    gw.mydomain.com
> > Address: 192.168.1.1
> >
> > tsellers at bluto-laptop:~$ nslookup 192.168.1.1
> > Server:       
> 192.168.1.9
> > Address:    192.168.1.9#53
> >
> > ** server can't find 1.1.168.192.in-addr.arpa.:
> NXDOMAIN
> >
> > tsellers at bluto-laptop:~$ dig mydomain.com
> >
> > ; <<>> DiG 9.5.0-P2 <<>>
> mydomain.com
> > ;; global options:  printcmd
> > ;; Got answer:
> > ;; ->>HEADER<<- opcode: QUERY, status:
> NOERROR, id: 29703
> > ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY:
> 1, ADDITIONAL: 0
> >
> > ;; QUESTION SECTION:
> > ;mydomain.com.       
>     IN    A
> >
> > ;; AUTHORITY SECTION:
> > mydomain.com.       
> 38400    IN   
> SOA    bluto.mydomain.com.
> admin.mydomain.com. 2007062001 28800 3600 604800 38400
> >
> > ;; Query time: 1 msec
> > ;; SERVER: 192.168.1.9#53(192.168.1.9)
> > ;; WHEN: Fri May 15 23:17:25 2009
> > ;; MSG SIZE  rcvd: 78
> >
> >
> >
> >       
> >
> > _______________________________________________
> > Cialug mailing list
> > Cialug at cialug.org
> > http://cialug.org/mailman/listinfo/cialug
> >   
> 
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