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P2302R-P1C Support Notes
All contents Copyright 2007 ZyXEL Communications Corporation.
15
In order to run the Windows 9x PPTP client, you must be able to establish an IP connection with a tunnel server
such as the Windows NT Server 4.0 Remote Access Server.
Windows Dial-Up Networking uses the Internet standard Point-to-Point (PPP) to provide a secure, optimized
multiple-protocol network connection over dial-up telephone lines. All data sent over this connection can be
encrypted and compressed, and multiple network level protocols (TCP/IP, NetBEUI and IPX) can be run
correctly. Windows NT Domain Login level security is preserved even across the Internet.
Window98 PPTP Client / Internet / NT RAS Server Protocol Stack
PPTP appears as new modem type (Virtual Private Networking Adapter) that can be selected when setting up a
connection in the Dial-Up Networking folder. The VPN Adapter type does not appear elsewhere in the system.
Since PPTP encapsulates its data stream in the PPP protocol, the VPN requires a second dial-up adapter. This
second dial-up adapter for VPN is added during the installation phase of the Upgrade in addition to the first
dial-up adapter that provides PPP support for the analog or ISDN modem.
The PPTP is supported in Windows NT and Windows 98 already. For Windows 95, it needs to be upgraded by
the Dial-Up Networking 1.2 upgrade.
Configuration
This application note explains how to establish a PPTP connection with a remote private network in the ZyXEL
Device SUA case. In ZyNOS, all PPTP packets can be forwarded to the internal PPTP Server (WinNT server)