UniDDE
UniDDE (Unitronics Dynamic Data Exchange) enables you to read and write data between Unitronics OPLCs and applications that support DDE, such as Excel.
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By Joe Tauser · Posted
I've had a couple of customers hit by this. I've been in communication with Unitronics and the problem has understandably been promoted to top priority. Their position right now is a VPN is the way to go. Joe T. -
I know this is an old topic, but I wanted to see if there's been any movement on having a 2nd network port available for things like MODBUS/TCP? Right now it's quite a bit of work to get these PLCs onto two (2) networks without having the OT Network group freak out over network security issues. -
Has there been any official word from Unitronics on this? Still curious if this widespread method is fixable via BIOS update and, if so, ETA. -
Saw a report on ABC News this morning about a drinking water pumping station in Pennsylvania being hacked. The photo was clearly a Unitronics V570 PLC. Unitronics, among others, is being targeted and we need to be acting immediately to prevent more occurrences. We need some guidance from Unitronics right away. -
You could have a local PC talking to the PLCs via the intranet, running the PC version of Remote Operator. They key point is then how you access that PC from the internet. If you use port forwarding and a public IP then the old problem still remains. However with a PC involved you have access to more secure methods such as TeamViewer or AnyDesk. This would mean connecting to that PC from the iOS/Android tablet, then operating the Remote Access app remotely using the iOS/Android device. This can be cumbersome if done on a phone, but not so bad on a tablet. I'll give another plug for UniCloud, as it now allows creation of a dashboard sized specifically for mobile devices. The UCR router supports 3rd party VPNs, you would just need to have a server set up with your chosen VPN installed. In terms of what I recommend, I'm just saying a VPN (or similar) is the most secure. Public IP and port forwarding is just about the least secure. I'd suggest considering multiple factors such as: * who will use the system and what is their expertise and comfort level with tech? * who will maintain the system, in-house experts or outsourced? * how frequently will it be used? * will it be monitor-only or monitor and control? Look at your available options and assess how well they fit the intended use. From experience I'd suggest that unless you are already an expert in VPN setups, pay for a professional service rather than try to teach yourself how to set up and manage a "free" system. That's just my opinion though 🙂
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