[Gllug] DNS problem

[Murray Walker]

here's a question, while we're on DNS lookup.

How do you find out the refresh rate/settings for a DNS record, if you don't
have your own DNS server setup?

I assume you can extract the information from any DNS server, but using what
tool? and how?

thanks,
m.

> -----Original Message-----
> From: Paul Nasrat [mailto:pnasrat at uk.now.com]
> Sent: Thursday, August 02, 2001 12:17 PM
> To: gllug at linux.co.uk
> Subject: Re: [Gllug] DNS problem
> 
> 
> 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
> 
> -- 
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> 
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