SCADA communication protocols are designed for the exchange of control messages on industrial networks, including serial, LAN and WAN, across multiple industries as automotive, transportation, petrochemicals, utilities and more. Over the years, SCADA Modbus has become the most commonly used SCADA protocol for connecting industrial electronic equipment and devices.
When interconnecting network segments of unequal levels of security, the lesser secure network makes the secure network more vulnerable to hacking. MBsecure distributes Modus data from PLCs among networks of different security classifications – eliminating any physical link between the PLC and HMI network. The PLC isolation occurs on the physical OSI Layer-1&2 without using CPU, software or IP address – making it impossible to hack.
Acting as a hardware bridge between two LINUX units with Modus protocol support, MBsecure acquires the PLC data over TCP/IP and responds to the HMI with the acquired data. Attempting to access the PLC through any device on the HMI network is futile – as if one of the RG-45 wire pairs is missing – while data is transmitted downstream untouched.