It is likely that you have firewalls in place that prevent data from being accessed from outside your networks. However, you may also have a need to access devices that are protected behind a firewall. Your IT department may be able to open a port that allows communication with a device that sits behind a firewall, but this is not always a desirable solution.
With ICONICS , firewalls are not a problem because GENESIS64 supports data tunneling which makes it possible to establish data communication with hardware devices behind a firewall.
Tunneling Through a Firewall
With the use of OPC UA, GENESIS64 reads TCP, DCOM, other non fire wall-friendly communications and converts them to HTTP, allowing data to go through a firewall. This built-in data tunneling is compatible with all OPC specifications, and works with any OPC server and OPC client. No special configuration is required