I was wondering if there is a way to restrict Internet access through a Windows NT 4.0 server or workstation. I am running a DHCP network with no static IP addresses. The Internet connection is through an ISDN router, which is currently letting everyone get out. Can you help?
If you don't want to buy any additional software, you can use Routing and Remote Access Service (RRAS). A few years back, I wrote a book called
NT Network Plumbing
that covers this topic pretty well. It's online now, and you can read the
chapter about RRAS
If you're willing to buy software, Microsoft Proxy Server works well with NT4. In the same book, there's information on proxy servers.