How Dial-Up Remote Access Works

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Dial-up remote access, also called Dial-Up Networking, allows an off-site computer to tap into an office computer's resources via a modem. Figure 31-1 shows the usual dial-up connections made to a network.

Figure 31-1. Dial-up connections to a network.

Remote or mobile users using a dial-up communications link can access network resources as if they were directly connected. Windows 2000 remote access servers can connect to clients running Microsoft Windows 2000, Windows NT, Windows 98, Windows 95, Windows for Workgroups, MS-DOS, or Apple Macintosh. Typically the client connects over a standard telephone line or over an ISDN line to a modem, modem pool, or ISDN "modem."