ZyXEL Communications P-334WT Support Notes page 86

This application note explains how to establish a PPTP connection with a remote private network in the Prestige 324 SUA
case. In ZyNOS, all PPTP packets can be forwarded to the internal PPTP Server (WinNT server) behind SUA. The port
number of the PPTP has to be entered in the SMT Menu 15 for Prestige 324 to forward to the appropriate private IP
address of Windows NT server.
Example
The following example shows how to dial to an ISP via the Prestige 334WT and then establish a tunnel to a private
network. There will be three items that you need to set up for PPTP application, these are PPTP server (WinNT), PPTP
client (Win9x) and the Prestige 324.
PPTP server setup (WinNT)
Add the VPN service from Control Panel>Network
Add an user account for PPTP logged on user
Enable RAS port
Select the network protocols from RAS such as IPX, TCP/IP NetBEUI
Set the Internet gateway to Prestige 324
PPTP client setup (Win9x)
Add one VPN connection from Dial-Up Networking by entering the correct username & password
and the IP address of the Prestige 324's Internet IP address for logging to NT RAS server.
Set the Internet gateway to the router that is connecting to ISP
Prestige 334WT router setup
Before making a VPN connection from Win9x to WinNT server, you need to connect Prestige 334WT router to
your ISP first.
Enter the IP address of the PPTP server (WinNT server) and the port number for PPTP as shown below.