Windows NT supports the Point-to-Point Protocol (PPP) in RAS. PPP is a set of industry standard framing and authentication protocols. PPP negotiates configuration parameters for multiple layers of the OSI model.
PPP support in Windows NT 3.5 (and Windows 95) means that computers running Windows can dial into remote networks through any server that complies with the PPP standard. PPP compliance also enables a Windows NT Server to receive calls from, and provide network access to, other vendors' remote access software.
The PPP architecture also enables clients to load any combination of IPX, TCP/IP, and NetBEUI. Applications written to the Windows Sockets, NetBIOS, or IPX interface can now be run on a remote Windows NT Workstation. The following illustrates the PPP architecture of RAS.
Figure 1.13 PPP Architecture of RAS