rate remote and local resources and to build test sequences. Using NI Remote VISA Servers, we have developed a method of sharing instru- ments to remote users who can integrate them into their experiments. If they are only didactical, even Units-Under-Test, UUT, can be far from the user, if not, at least UUT and intelligent transducers should be local and other equipment can be remote. The configuration implemented consists of an instru- mentation (workbench) PC, running NI Remote VISA Server, to which all the instruments are connected using different interfaces (such as GPIB, USB, serial, and parallel). As shown before, the workbench server is also connected in the intra- net of the Web server which is "visible" in the Internet. A client who wants to have access to the remote instruments needs to know the IP address of the Web server (e.g., 82.78.149.213). The user can view the resources offered by a certain Web server in a tree-like manner using National Instruments' MAX (Measurement and Automation Explorer) (Figure 12.33). In order to add a new remote system in MAX, the user needs to right-click on the Remote Systems and to select Create new. The user needs to click on Remote VISA System and to config- ure the properties window that appears, as depicted in Figure 12.34. Port forwarding has also been configured in order to route Remote VISA data (coming through the dedicated port 3537) from the Web server to the workbench server. Any security requirements can thus be fulfilled by configuring access lists for port 3537. A client who has access to the system will use only the IP address of the Web server for remote access to the "published" experimental resources. Configuration My System Data Neighborhood Devices and Interfaces Historical Data Scales Software IVI Drivers Remote Systems 82.78.149.213 Dovicos and Interfaces PXI PXI System Serial & Parallel GPIBO::INTFC GPIBO::4::INSTR GPIBO::22::INSTR Software Figure 12.33 Viewing the remote instruments using MAX. Service Delivery Platforms Create New Remote VISA S