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DNS resolution

By razorren ·
Hi guy's. I setup a NT4 server with DHCP, WINS and DNS. I can ping and resolve any local host fine therefore I added a fowarder in my DNS configuration pointing to my ISP's DNS server. However local workstation still cannot resolve 'yahoo.com' for example. I have tcpip ip fowarding turned on. Do I need a proxy server in order to ping out to the internet via my NT server ?

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DNS resolution

by talbot In reply to DNS resolution

If there is no proxy server protecting your network (you simply assigned computers IPs from the range your ISP provided you with), you should save yourself a headache and add two DNS server IPs on your client machines. The first in the resolution order should be your local DNS server to resolve computers on your network. The second should be the IP of your ISPs DNS server. As long as IP forwarding is enabled on your router, and the clients have the router listed as their default gateway, this should work fine. You should have the clients pointing to the router your ISP provided you with as a default gateway, not your DNS server machine though.


It sorta sounds like you are trying to use your DNS server as your gateway, and this isn't a good solution. If you need a gateway to the internet and wish to use an internal IP address range, you will need to install a proxy product, installed on a computer with a direct connection to your router. I find MS proxy is a great product to use to accomplish this

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DNS resolution

by razorren In reply to DNS resolution
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DNS resolution

by timber In reply to DNS resolution

Do you have a static IP address from your ISP?? If so add a static route between your internal server ip and your IP from your ISP.
example
-Internal 10.1.1.1
-external 208.25.x.x
From the command prompt type:
route add -p 10.1.1.1 208.25.x.xroute add -p 208.25.x.x 10.1.1.1

Hope this helps

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DNS resolution

by razorren In reply to DNS resolution
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DNS resolution

by kanaant In reply to DNS resolution

hi,
I would say you have a misconfiguration in your DNS entry,
But i can tell you for sure, u dont need IP forwarding unless your NT is acting as a router between 2 subnets, and no u do not need a proxy to be able to pass DNS lookups to your ISP.
take a look at the %systemRoot%\system32\DNS
look for a cache.dns if its not there check in the samples DIR and copy to the Above system32\DNS directory, this might be helpfull.
its a long shot, but u never know. :)

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DNS resolution

by razorren In reply to DNS resolution
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DNS resolution

by curlergirl In reply to DNS resolution

Since you don't have a proxy, your workstations need to know the IPs of your ISPs DNS server(s) in order to resolve Internet host names. I'm not a real DNS maven, so you may not have your forwarder configured properly, or maybe you still need the addresses at the workstation level. Anyway, you can use DHCP to assign the DNS server addresses to the workstations directly by adding the appropriate scope options. You should turn IP forwarding off, as you don't need it. Hope this helps!

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DNS resolution

by razorren In reply to DNS resolution
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