Gateway port protection

Hello everyone, I would like to know if it is possible to implement in node-RED a way to authenticate or make the serial connection safer for a Modbus rtu communication, in case a person connects another device with the same address and causes an error.

Hi, this is not clear at all sorry.

What are you trying to protect - access to Node-RED?

As I am sure you know, ModBus RTU is a serial comms and it has no concept of security so you cannot stop anyone connecting another device (unless it is physically protected)

Access to Node-RED can be secured by editing your settings file: Securing Node-RED : Node-RED

Physical locks?

another what kind of device? A modbus device? another node-red?

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