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Microsoft introduced a feature in Windows 2000 called the Internet Printing Protocol (IPP), which enables you to print to and manage a printer across the Internet over HTTP and port 80. The benefit to using IPP is that you can access printers behind firewalls. The flipside is that IPP simplifies firewall administration and configuration by not requiring additional ports other than port 80, which is also used for Web browsing.
A computer running Windows 2000 Professional or later can serve as an IPP printing host, serving its printers out to remote clients. Setup does not automatically configure your printers to enable IPP when you install Internet Information Services (IIS) on a Windows 2000 Professional computer. However, you can set it up manually.
- After you install IIS on the Professional system, open the IIS console, right-click the Default Web Site, and choose New | Virtual Directory to start the Virtual Directory wizard.
- Under the site, add a virtual directory with an alias of Printers that points to %systemroot%\Web\printers. Set the permissions to include Read And Run Scripts.
- Open the Properties for the Printers virtual folder and click the Documents tab.
- Add the default document Page1.asp, remove the other default documents, and click OK.
- To print to or manage a printer on the target computer, connect to http://[computer]/printers, where [computer] is the IP address or fully-qualified host name of the computer hosting the printer.
- If you can't see the Printers from the client browser, stop and restart the Default Web Site in the IIS console.
Note: The client must support IPP to take full advantage of printing across the Internet. Windows 2000 and later clients support IPP. You'll find a Windows 9x client for IPP on the Windows 2000 Server CD in \Clients\Win9xipp.cli.