DNS and Remote Host over VPN

Lawrence K. Chen, P.Eng. lkchen at ksu.edu
Wed Jul 10 18:38:51 UTC 2013


You probably have a split-tunnel VPN, so using local DNS is only resolving what external users can see.  Change your client to use the internal DNS server to have it resolve internal view hosts.

----- Original Message -----
> Hi Steve
> 
> this is the output commands:
> 
>   dig pc12.mydomain.com
> 
> ; <<>> DiG 9.6-ESV-R4 <<>> pc12.mydomain.com
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 28662
> ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL:
> 0
> 
> ;; QUESTION SECTION:
> ;pc12.mydomain.com   IN      A
> 
> ;; AUTHORITY SECTION:
> mydomain.com     1800    IN      SOA     server.pc12.mydomain.com.
> hostmaster.pc12.mydomain.com. 2013070968 10800 3600 604800 3600
> 
> ;; Query time: 0 msec
> ;; SERVER: 127.0.0.1#53(127.0.0.1)
> ;; WHEN: Wed Jul 10 11:41:05 2013
> ;; MSG SIZE  rcvd: 113
> 
> nslookup pc12.mydomain.com
> Server:         127.0.0.1
> Address:        127.0.0.1#53
> 
> ** server can't findpc12.mydomain.com: NXDOMAIN
> 
> Thanks for the advice, I got both commands for testing dns
> 
> 
> On 10/07/2013 11:39 AM, Steven Carr wrote:
> > On 10 July 2013 17:34, IT Support <it.compilation at gmail.com> wrote:
> >> I already add a address record on my internal view for that remote
> >> host, if
> >> I ping this host by IP address i got answer, but if i ping the
> >> same host by
> >> name i got this message:
> >> ping: unknown host
> >
> > In future please copy/paste the commands you have ran and the
> > output
> > so we can see the exact responses.
> >
> > What response do you get when you run a `dig` or `nslookup` for the
> > hostname? (Ping does not test DNS, it may attempt a DNS query but
> > it
> > does not fully test DNS). Did you try the FQDN of the host?
> >
> > Steve
> > _______________________________________________
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-- 
Who: Lawrence K. Chen, P.Eng. - W0LKC - Senior Unix Systems Administrator
For: Enterprise Server Technologies (EST) -- & SafeZone Ally
Snail: Computing and Telecommunications Services (CTS)
Kansas State University, 109 East Stadium, Manhattan, KS 66506-3102
Phone: (785) 532-4916 - Fax: (785) 532-3515 - Email: lkchen at ksu.edu
Web: http://www-personal.ksu.edu/~lkchen - Where: 11 Hale Library


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