ZyXEL Communications P-202 - Manual (Page 39)

P-202H Plus v2 Support Notes
Configure a PPTP server behind SUA
• Introduction
PPTP is a tunneling protocol defined by the PPTP forum that allows PPP packets
to be encapsulated within Internet Protocol (IP) packets and forwarded over any
IP network, including the Internet itself.
In order to run the Windows9x 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.
Window95 PPTP Client / Internet / NT RAS Server Protocol Stack
All contents copyright © 2006 ZyXEL Communications Corporation.
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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.