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Web Browser Solution Using ActiveX

2010-06-23 10:42:39views: 840IGSS

Web Browser Solution Using ActiveX

The web browser has become an indispensable part of our lives. This also applies to SCADA/HMI systems, where users want to be able to monitor and control using their favorite browser. However, the security and performance aspects have been major obstacles in obtaining secure and fast supervision. But with the current internet bandwidth and connection speeds, supervision in IGSS with a web browser is feasible, secure and fast.


  • A Terminal Server with the appropriate number of client licenses
  • IGSS must be installed on the Terminal Server
  • The client must have a browser supporting ActiveX

      How it works
      • The client enters the terminal server URL in his browser.
      • The client logs on with his user name and password.
      • The client now has full access to all IGSS features, as if he was working on a normal operator station.

          Security considerations
          Industrial processes are very secure by their nature. Often, internet access is not available from the industrial network. To make IGSS accessible from the outside, the following very secure setup can be made:
          • Place the IGSS Server on the protected industrial network
          • Place the Terminal Server on the public network
          • Link the Terminal Server to the IGSS Server (see IGSS Help)
          • Create users and credentials in the IGSS User Administration module
          • Optionally, create a VPN connection to the Terminal Server

          If you want your users to be able to connect anywhere, anytime - then the VPN solution is not optimal. The user must set up a VPN connection on the client PC, before he can connect.
          Placing the Terminal Server on the public network does carry the risk of intruders. However, by isolating the IGSS Server on the industrial network, the IGSS project and all data files can never be compromised.
          Remote Access Solution
          If you want a cost-effective web access solution that still fulfills your security demands, use the Remote Access Solution in IGSS.

          Installing the remote access software server-side and client-side is a breeze. Setting up the security is also very fast and intuitive. All the client needs is a browser and an ID/Password to get access to the plant's operator station.
          A remote access solution with IGSS has the following requirements:
          • Plant operator station must have the server version of the remote access software installed
          • Examples are TeamViewer, LogMeIn, GoToMyPC
          • The client must have a web browser installed

          How it works
          • The client enters the URL for remote access to the operator station.
          • The client logs on to the server.
          • The client now takes over control of remote screen, mouse and keyboard.
          • The client has full access to all IGSS features, as if he was working on a normal operator station.

          Security considerations

          It is recommended to take the following security measures:
          • Restrict the client's permissions in the remote access software, as required
          • Set up a firewall between the web client and the plant operator station
          • Set up User Administration in IGSS

          With this in place, you have a very secure web access solution. To automate the logon process for the user further:
          • On the client, configure that the remote access will Auto-start with Windows.
          • Predefine the remote access ID and password.


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