Re: Strange DNS
- From: "Ace Fekay [MVP]" <PleaseSubstituteMyActualFirstName&LastNameHere@xxxxxxxxxxx>
- Date: Wed, 5 Oct 2005 22:08:02 -0400
In news:di1ht5$kdc$1@xxxxxxxxxxxxxxxxxx,
Per W. <fungererikke@xxxxxxxxxxxxxxxxxxxxx> made this post, which I then
commented about below:
> "Deji Akomolafe" <noemail@xxxxxxxxxxxxxxxx> skrev i melding
> news:ee7ARUeyFHA.2812@xxxxxxxxxxxxxxxxxxxxxxx
>> Let's see....
>>
>> No-VPN scenario:
>> You are trying to lookup a resource located in your office. That
>> resource is
>> NOT public. So, the ISP DNS server is not able to locate the record.
>>
>> With-VPN scenario:
>> Now you are connected to your office. Your requests for resources
>> inside your office are now tunnelled through the VPN connection.
>> This way, the requests get to your office because it doesn't go
>> through the public internet. The resource is located and the record
>> is returned to you via the
>> tunnel.
>>
>> Makes sense, or did I misunderstand you?
>
> Okey, let me try to explain it a litle more, when using NSLOOKUP
> int-www.ext-office.org with or without VPN the result is NOTHING.
> BUT, when using NSLOOKUP int-www.ext-office.org 194.19.1.52, thats
> using nslookup to a external dns server, in this case a dns server
> with a different ISP in norway, this is a dns server that everyone
> can reach, with or without VPN, even you can use that dns server,
> if
> i do NSLOOKUP int-www.ext-office.org 194.19.1.52 without VPN then the
> result is nothing,
> BUT, when i connect to the VPN and use the same
> lookup to the same external dns that has nothing to do with the VPN
> connection i get the correct answer, and i get the correct answer
> with any dns in the hole world when connected to the VPN,
> but as soon
> as i disconnect from the VPN i cant get any dns to answer,
> and i cant
> in any case with or without VPN make the internal dns-server answer,
> even if the internal dns server has a forwarder to a dns that gives
> an answer when connected with VPN.
> /Per W.
I can't get that either. Look:
C:\>NSLOOKUP int-www.ext-office.org 194.19.1.52
Server: dns202.telia.com
Address: 194.19.1.52
*** dns202.telia.com can't find int-www.ext-office.org: Non-existent domain
But it did resolve for microsoft.com, and other domains.
Maybe that server is a BIND server and it has 'views' set to only answer for
the int-www.ext-office.org namespace only from your corp subnet(s)?
--
Ace
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Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT, MVP
Microsoft Windows MVP - Windows Server - Directory Services
Microsot Certified Trainer
Infinite Diversities in Infinite Combinations.
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