Hach-Lange SC 1000 Controller Enhanced Communications - Manual (Page 15)

15
Installation
3.5 Install a VPN tunnel
If the sc1000 controller is outside of the corporate network, a virtual private network
(VPN) must be installed between the computer and the sc1000 controller. The VPN
makes sure that the computer and sc1000 controller can communicate within a secure
channel (tunnel) that is protected from unauthorized access.
Windows 2000 and Windows XP both provide a built-in VPN server. However this only
enables a single connection to be made between an sc1000 controller and the computer
at any one time. For several connections to run simultaneously, a separate stand-alone
VPN server is required.
Depending on the design of the VPN connection, the VPN server is provided by a mobile
network operator/Internet service provider or the IT department. The design must be
planned thoroughly before installation.
3.5.1 Requirements associated with the sc1000 controller
The sc1000 controller requires a specific VPN software package that must be purchased
from the manufacturer. There are several ways to install the VPN software package on
the sc1000 controller:
• Using an SD memory card
• Using a web browser
• Using Windows Explorer/FTP data transfer
3.5.2 Requirements associated with the computer
The freeware VPN software "OpenVPN" must be installed on the computer (refer to
Section 3.5.4 on page 17 ).
3.5.3 sc1000 controller: Install the VPN client using an SD memory card
The sc1000 controller display module includes a build-in slot for SD cards. One of the
functions of the SD card is to update the controller software. Further information
regarding the use of SD memory cards is provided in the sc1000 controller manual.
An SD memory card containing the VPN client software tailored to the sc1000 controller
can be purchased from the manufacturer (refer to
Section 5 on page 45 ).
Note: Only use SD cards with a maximum memory size of 1 gigabyte for installation.
1. Create the following directories on the SD memory card (if not yet created):
• DEV_SETTINGS
• SC1000
• UPDATE
2. Copy the following files to the UPDATE directory on the SD memory card:
From manufacturer:
• Tailored VPN client software for sc1000
(if not already installed on the SD card contact the support of the manuafcturer)