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Oooph. Modbus is grossly inappropriate for use in IIoT architectures. It's 20 years old and has not even the slightest hint of security. One thing we're seeing
by kevinherron 10y ago
Oooph. Modbus is grossly inappropriate for use in IIoT architectures. It's 20 years old and has not even the slightest hint of security.
One thing we're seeing in practice is lower-powered industrial PCs running at remote sites exporting data from Modbus and other field protocols via something like MQTT on SSL.
That being said, there are thousands of Modbus-speaking (and other protocols, too) devices sitting out there on the public internet behind a cellular modem waiting to be polled or actively being polled by SCADA systems built before anybody bothered to think about security.
- CptMauli 10y agoIf you are not using a VPN tunnel to access your modbus devices, then you are criminally negligent. But I also discovered that an entire line of heat controllers is accessible via Modbus on the open internet. So if I want to shut down the heating for a few hundred appartment blocks, I could do that easily. And these are not actually old devices. There is even an app which you can download and control these.