You can also use Internet Connection Services for RAS applications with a Windows NT PPTP-enabled server to provide secure remote access to a corporate private network. Corporations can team up with Internet service providers and use Internet Connection Services for RAS technology to build secure connections through the Internet to a corporate private network. The following diagram illustrates a minimal configuration of Internet Connection Services for RAS on a corporate private network.

Note
For sites with a homogenous environment of Windows NT servers using Windows NT Remote Access Service to provide dial-up networking and VPN access, it is recommended that administrators use Windows NT authentication without going through a RADIUS server.