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DNS Trouble

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7 replies

by wbruchha

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My Windows 2000 server is the only DC in the private Domain and acts as DHCP and DNS server with AD. Attached is a CISCO 770 ISDN Router. Name resolution in the intranet works fine but not so for the internet. When I ping the ISPs DNS server a connection is established immediately. As long as this 'Pinged connection' stays I can do IE and e-mail without any problems. Trying to establish a connection to the internet by opening IE or Outlook doesnn't work..
So this seems to be that the physical part is fine. The router is fine but something with the 'forwarding' to the router is not working. Any ideas? Your hints are very welcome !
Wolf G.

7 replies

by ramon.garcia

Wolf G.,

Make sure you have enabled forwarding on the DNS server. Put in the ip of the external DNS server in the "Forwarders" tab which is found under the DNS MMC in your DNS server's properties tab.

Hope this helps

by deltree

Are you pinging from the server or a workstation?
Can you ping the ISP from both.
I suspect you don't have a valid gateway entry on your DHCP server.

by wbruchha

I can ping the ISP from both. Entries are fine. I suspect that DNS entries are defective. Replacing the cache.dns didn't solve the problem.

by expertpc

What DNS server are your clients and server using?

What gateway?

The clients and server should be using the server as their DNS and the DNS on the server should be pointing towards either your ISP's DNS or the regular upper level groups that are ther by default.

All gateways (what DHCP hands out should be set for your router and not the server. THis is a common mis-configuration by intranetworks.

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