How do I access my public IP address after changing from Windows NT 4 to Windows 2000?

How do I access my public IP address after changing from Windows NT 4 to Windows 2000?

In my office, we have a Local Area Network (LAN) of 180 computers on the Internet. I used both public and private IP address on the Network before, but when we changed from Windows NT 4 to Windows 2000 server, I could no longer access public addresses on the network. The WAN and LAN connection were on the same switch.
How can the situation be resolved so that I can still access my public IP address on my network?

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I would check to see that routing is enabled between the public and private interface card in the server. Also, you will want to check your subnet masks and default gateways. If you look in your network properties you will find the enable feature for IP routing.

You may also have to configure the Windows 2000 services to allow the public port to be shared by only those devices on your network. As I am not sure what features you have installed, these are my initial suggestions.

If you installed any type of firewall on the server, you may also have to set your private addresses as a trusted network. These are the most common solutions, but if these suggestions don't help, tell me what you did and I can offer more assistance.

This was first published in March 2006