changing internet providers

Microsoft Windows server 2003 enterprise
May 5, 2010 at 08:33:26
Specs: Windows 2003 Server
We are changing ISPs. Each has their own T1 and modem. With current ISP we go from the modem to a wireless router to a Windows Server 2003 (through a wire) and the server distributes to a hub and then (wired) to computers around the company. When I switch the wire to the new ISP modem (and reset the wireless router), the Server has internet access, but the computers on the hub do not. Switch the wire back and all is well again. I can ping and trace from any computer to a location outside the local network. I just don't seem to be able to use Internet Explorer or Google Chrome

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May 5, 2010 at 08:36:45
Your first phone call should be to your new ISP to ask them for the router settings for the wan port.

Most importantly note the dns ips. You then need to put those dns ips in the MS DNS server forwarders tab [not be be confused with forward lookup zone]

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May 5, 2010 at 08:43:27
My new ISP can see the server and they say their responsibility ends there. I will call them and get the settings etc. Thanks

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May 5, 2010 at 08:51:19
Check the settings for the ISPs DNS server at the router or server.
If you are able to ping and traceroute on both lines, whats about the name resolution on a traceroute?
I guess it only functions, when you've switched back, right?
The new ISP uses other DNS servers, you may have to configure at the router or server.

The original poster should always write the last response !!!
Let us know, if the problem is solved !!!

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Related Solutions

May 5, 2010 at 08:52:24
"My new ISP can see the server "

Hopefully you mean their modem NOT your server. If so you have a serious security misconfiguration

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May 5, 2010 at 09:18:09
I will look into the security issue. Don't know what they were actually seeing, but they were confirming that we were using their internet connection.

The above suggestion worked great. We have internet on all computers. I can't believe how good this worked. We' ve been fighting this for days now.


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