After the necessary platform configuration of any JACE with GPRS modem option (see Required platform GPRS setup), you should be able to use a VPN connection to establish PPTP communications to that JACE over the Internet.
The following procedures explain how to create a VPN connection object on your PC using Windows, for which you configure with parameters supplied by your Service Provider.
Creating a Windows VPN connection object
At your Windows PC, do the following:
Open the Windows Control Panel (click ).
Among the control panel objects is one for Network Connections.
Double-click Network Connections.
Your network connection objects appear, including a link for a New Connection Wizard.
Double-click the New Connection Wizard.
The “New Connection Wizard” welcome dialog appears. Click to continue.
In the “Network Connection Type” step, there are several available choices.
Select “Connect to the network at my workplace”, and click to continue.
In the “Network Connection” step, there are two choices (Dial-up or Virtual Private Network).
Select “Virtual Private Network Connection”, and click to continue.
In the “Connection Name” step, enter a name that is meaningful to you (name does not affect operation, and you can change
this later if desired). For example, type in Wyless VPN
Click to continue.
In the “Public Network” step, select “Do not dial the initial connection”, and click to continue.
In the “VPN Server Selection” step, enter the VPN server name or address furnished by your Service Provider. For example for
Wyless, you enter: vpn.wyless.net
Click to continue.
If a “Smart Card” step appears, choose No (“Do not use my smart card”), and click to continue.
In “Connection Availability” step, you typically select “Anyone’s use”. Click to continue to the “Completing the New Connection Wizard” dialog.
In the “Completing the New Connection Wizard” dialog, choose whether a desktop shortcut should be added for this connection, and click .
The “Connect ConnectionName” popup dialog appears (e.g. “Connect Wyless VPN”), with fields for credentials (User name and Password), as well as save
options for these credentials. See Figure A..2.
In the “Connect ConnectionName” dialog, enter the VPN access user name and password as furnished by your Service Provider.
Typically, you also check (enable) the “Save the user name and password for the following users”, selecting either “Me only” or “Anyone who uses this computer”.
Do not yet! An important setting must be configured in the of this object first!
See the next procedure, Setting the proper gateway operation for the VPN client.
Setting the proper gateway operation for the VPN client
With the “Connect ConnectionName” dialog open for the newly-created VPN client connection object (as shown in the previous Figure A..2):
Click the button.
A multi-tabbed dialog appears. Select the Networking tab.
In the Networking tab, click to highlight the listed “Internet Protocol (TCP/IP)” item, and then click the Properties button.
An “Internet Protocol (TCP/IP) Properties” dialog appears with a single “General” tab, including an button.
Click the button.
The “Advanced TCP/IP Settings” dialog appears, with a “General” tab.
In the “General” tab of the “Advanced TCP/IP Settings dialog, make sure the checkbox is cleared for:
Use default gateway on remote network (see Figure A..3).
Figure A..3. Clear option to “Use default gateway on remote network” in Advanced TCP/IP Settings dialog

This is necessary to prevent forwarding of all TCP/IP traffic from your PC to the remote VPN network, which can overload the Service Provider and cause various connection
issues.
Click in each opened dialog to close and save.
The “Connect ConnectionName” dialog (Figure A..2) remains. Click the button to connect. While connected, you see a “connected” state by the network connection object in your Network Connections folder.
Once connected, you can use Workbench to connect to a GPRS modem-equipped JACE using its Service Provider assigned static IP address, either to open its station (Fox) or a platform connection. Or, use a browser connection to the station if it is running the WebService.
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