If a remote computer has Internet Information Services (IIS) installed, has enabled Web Sharing on any folders, and is accessible over the Internet or a corporate Internet, you can access its shared files through Internet Explorer version 5 or higher. This technology lets you copy files to and from a remote computer with a high degree of security, through firewalls that normally block access to file sharing protocols.
When IIS is installed, the computer's shared printers may also be used through the Internet using the Internet Printing Protocol, or IPP. IPP lets remote computers print to shared printers across the Internet, again through firewalls.