Technical Reference Manual - InduSoft

About thin clients and mobile access
Apache for Windows
If IIS is not available to you or if you choose not to use it, then the second most popular Web server for
Windows is the open-source Apache. However, it requires even more expertise than IIS to properly install and
configure, so please review the documentation thoroughly before you attempt it.
Installing the web tunneling gateway
The Web Tunneling Gateway (WTG, a.k.a. IndWebSvc) enables an Internet-connected computer — typically
your web server — to route project data between remote thin clients and a data server that is not connected to
the Internet. This section describes how to install WTG.
Before you proceed with this task, you should first set up Microsoft IIS as a web server to host your project
pages; WTG can only run on Microsoft IIS. Also, your web server must be connected to the Internet and have
a static IP address, rather than a dynamically assigned IP address. Consult your IT department or ISP about
how to get a static IP address. Finally, your web server and data server both must be on the same internal
TCP/IP network, even if only your web server is connected to the Internet.
In order for thin clients to access your project, they must be able to communicate with both the web server
that is hosting your project pages and the data server that is actually running your IWS project. This is not
a problem if your servers and clients are all on the same internal network, nor if you connect both of your
servers to the Internet so that remote thin clients can communicate with them.
However, if you choose not to connect your data server to the Internet (for network security or topology
reasons), then you must route the project data through another computer that is connected.
WTG provides these routing capabilities. It is an ISAPI extension for Microsoft IIS, and it is typically installed
on the same web server that is hosting your project pages. It encapsulates the packets sent between the data
server and the thin clients, thereby ensuring project security, and it can route data for multiple data servers
at the same time.
These instructions are for:
• Microsoft IIS 7.0 running on Windows Vista and Windows Server 2008; and
• Microsoft IIS 7.5 running on Windows 7 and Windows Server 2008 R2.
1. On your web server (or whichever Internet-connected computer that will act as the gateway), make sure
Microsoft IIS is running and ISAPI Extensions are enabled.
For more information, see Configuring a web server to host your project pages.
2. Copy the WTG installer from the IWS application directory to the "root" directory of your website (e.g., C:
\inetpub\wwwroot\).
The installer is located at C:\Program Files\InduSoft Web Studio v7.1\Bin
\WebTunnelingGateway.exe
3. Run the installer, and then proceed through the installation wizard.
There are no options to select.
The installer will create a new directory in the website's "root" directory and install the WTG extension files
there. It will also create a new application pool.
4. Open IIS Manager.
a) Click Start, and then click Control Panel.
b) In the Control Panel window, do one of the following.
• If you are using Windows Server 2008, click Administrative Tools.
• If you are using Windows Vista, click System and Maintenance, and then click Administrative Tools.
• If you are using Windows 7 or Windows Server 2008 R2, click System and Security, and then click
Administrative Tools.
c) In the Administrative Tools window, do one of the following.
• If you are using Windows Vista or Windows 7, double-click Internet Information Services (IIS) Manager.
• If you are using Windows Server 2008 or Windows Server 2008 R2, double-click Server Manager, and
then in the Server Manager window, click Internet Information Services (IIS) Manager.
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