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DNS on WIN9x. very expensive problem!

By wkoch7 ·
A PC in a LAN outside wants to connected to an Extranet (let's say extranet.com)
via a phone/ISDN maybe VPN router.
The Extranet has a DNS server (dns.extranet.com) to
resolve the hostnames in the extranet.
I enter the router as gateway and DNS server into the TCP/IP settings.

Now every call to any host in the PC's LAN causes a phone call to the DNS server of the extranet, though the host is never in the extranet.
1. If a user specifies a hostname or url, which is not known in the LAN or mispelled, the line goes up.
2. If there is MS Networking installed, MS Networking will query the DNS every 15 minutes, though there is nothing interesting behind the extranet DNS server for MS Networking. This makes 2880 calls per month without any value.

CAN I set up the DNS on the PC in a way, that the DNS behind the router is ignored, if the queried host is NOT in the domain extranet.com.

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DNS on WIN9x. very expensive problem!

by hbarber In reply to DNS on WIN9x. very expens ...

I do not believe that you have the ability to ignore the DNS request minus a filter on the outbound router. However, you have a couple of potential options in order to get around the situation.
(1) Refer to http://support.microsoft.com Article ID: Q139270 - you can change your name resolution order so that it does a DNS lookup last (I assume that you are using NetBios - WINS or broadcasts locally under normal conditions) - perform NetbtPriority first (see article), DnsPriority last.
(2) Keep an up-to-date hosts file locally on that machine with the correct dns entries for the "extranet.com" domain.

Hope this helps.

Regards,
Hiram Barber
hbarber@afford.com

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DNS on WIN9x. very expensive problem!

by wkoch7 In reply to DNS on WIN9x. very expens ...

The question was auto-closed by TechRepublic

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DNS on WIN9x. very expensive problem!

by fido In reply to DNS on WIN9x. very expens ...

Apart from the suggestions made above, I can only suggest you setup a DNS server on the local LAN and set it as the primary DNS server for the workstation. This of course won't stop the misspellings causing a connection but should stop local traffic initiating the link.

Regards,
Daniel

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DNS on WIN9x. very expensive problem!

by wkoch7 In reply to DNS on WIN9x. very expens ...

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DNS on WIN9x. very expensive problem!

by dbmerritt In reply to DNS on WIN9x. very expens ...

I agree with 1 and 2. You can also enter commonly accessed hosts in extranet.com into DNS Manager (as 'A' records). That, and DNS caching, may cut down on calls to the external DNS server.

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DNS on WIN9x. very expensive problem!

by wkoch7 In reply to DNS on WIN9x. very expens ...

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DNS on WIN9x. very expensive problem!

by wkoch7 In reply to DNS on WIN9x. very expens ...

This question was auto closed due to inactivity

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