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14. Virtual Private Network (VPN)
14.1. Local VPN
The system is equipped with IPSec VPN feature. To utilize IPSec VPN supported by Microsoft Windows XP SP2
(with patch) and Windows 2000 operating systems, the system implements IPSec VPN tunneling technology
between client's windows devices and the system itself regardless of wired or wireless network.
By pushing down ActiveX to the client's Windows device from the system, no extra client software is required to be
installed except ActiveX, in which a so-called "clientless" IPSec VPN setting is then configured automatically. At the
end of this setup, a build-in IPSec VPN feature will be enabled and ready to serve once it is launched for setup. The
goal of this design is to eliminate the configuration difficulty from IPSec VPN users. At the client side, the IPSec VPN
implementation of the system is based on ActiveX and the built-in IPSec VPN client of Windows OS.
• ActiveX Component
The ActiveX is a software component running inside Internet Explorer. The ActiveX component can be checked
by the following windows.
Windows Internet Explorer: From the Tools menu, click on Internet Options. Select the Programs tab and
click Manage add-ons button to enter the Manage add-ons dialogue box, where you can see VPNClient.ipsec
is enabled.
During the first-time login to WHG CONTROLLER with Local VPN, Internet Explorer will ask clients to download
an ActiveX component of IPSec VPN. Once this ActiveX component is downloaded, it will run in parallel with the
"Login Success Page" after the page being brought up successfully. The ActiveX component helps set up
individual IPSec VPN tunnels between clients and WHG CONTROLLER and check the validity of IPSec VPN
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