[Gllug] DNS problem

[Paul Nasrat]

On Thu, Aug 02, 2001 at 12:43:34PM +0200, Xander D Harkness wrote:
> I have a problem with my DNS.
> 
> I am able to query my dns normally using Linux from a variety of locations.
> 
> If, however I do an nslookup from some windows boxes I get a timeout.


[whois.nic.uk]

Domain Name: HARKNESS.CO.UK

Registered For: Mr Alexander Harkness

Domain Registered By: TELEWEST

Registered on 16-Feb-1998.

Record last updated on 26-Jul-2001 by <hostmaster at cableinet.net>.

Domain servers listed in order:

DAVROS.WILDTHORN.COM              213.48.46.196
SPITFIRE.WILDTHORN.COM            213.48.46.206

WHOIS database last updated at 02:35:01
02-Aug-2001

The NIC.UK Registration Host contains ONLY
information for domains
within co.uk, org.uk, net.uk, ltd.uk and
plc.uk.  Please use the whois
server at rs.internic.net for Internet
Information or the whois server
at nic.ddn.mil for MILNET Information.

Dig gives:

; <<>> DiG 8.3 <<>> @davros.wildthorn.com harkness.co.uk soa 
; (1 server found)
;; res options: init recurs defnam dnsrch
;; res_nsend to server davros.wildthorn.com  213.48.46.196: Connection timed out

Looks like this is your guilty party.


Starting nmap V. 2.54BETA22 ( www.insecure.org/nmap/ )
Interesting ports on davros.wildthorn.com (213.48.46.196):
Port       State       Service
53/tcp     open        domain                  


Nmap run completed -- 1 IP address (1 host up) scanned in 1 second

hmm open, lets see what it does when we do an nslookup

[root at now0628 paul]# /usr/sbin/tethereal host davros.wildthorn.com
Kernel filter, protocol ALL, raw packet socket
Capturing on eth0
  0.000000 now0628.uk.now.com -> davros.wildthorn.com DNS Standard query
  PTR 196.46.48.213.in-addr.arpa
    4.992352 now0628.uk.now.com -> davros.wildthorn.com DNS Standard
    query PTR 196.46.48.213.in-addr.arpa


[paul at now0628 paul]$ nslookup - spitfire.wildthorn.com
Default Server:  spitfire.wildthorn.com
Address:  213.48.46.206

> set type=ptr  
> 196.46.48.213.in-addr.arpa
Server:  spitfire.wildthorn.com
Address:  213.48.46.206

196.46.48.213.in-addr.arpa      name = davros.wildthorn.com
196.46.48.213.in-addr.arpa      nameserver = davros.wildthorn.com
196.46.48.213.in-addr.arpa      nameserver = spitfire.wildthorn.com
davros.wildthorn.com    internet address = 213.48.46.196
spitfire.wildthorn.com  internet address = 213.48.46.206

Seems good in ptr record.  Check what dns settings are on davros in
/etc/resolv.conf (ie can it get it's own ptr record).

Paul

-- 
"we apologise for any inconvenience" - God's Last Message to His Creation
Courtesy of Douglas Adams

-- 
Gllug mailing list  -  Gllug at linux.co.uk
http://list.ftech.net/mailman/listinfo/gllug