Configuration of data transfer from the OPC UA server to the MQTT broker via Kaspersky IoT Secure Gateway 100 consists of the following steps:
An encryption key and certificates must be generated if a secure OPC UA connection is used.
You can read about the OPC UA protocol specification on the developer's website. Kaspersky IoT Secure Gateway 100 version 2.0 supports OPC UA protocol version 1.04.
You will need to generate an encryption key and certificate for the MQTT client, and prepare a file containing the certificate chain that was used to sign the server certificate.
Detailed instructions related to this step are provided in this Help section.