Authentication
The TC3_IoTCommunicator PLC library and the TwinCAT IoT Communicator app can use an authentication mechanism, which is standardized and implemented in the MQTT protocol (see OASIS standard specification). The PLC library and the app use MQTT protocol version 3.1.1.
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Authentication does not guarantee protection against cyber attacks In addition to authentication, TLS encryption should be implemented. Otherwise, the user name and password are transmitted in plain text. (See Encryption) |