TLS-Verschlüsselung (EN)

Architecture

TLS (Transport Layer Security) is an encryption technology used in MQTT installations to protect communication between clients and brokers from eavesdropping and manipulation. By implementing TLS, all data is encrypted over the network, which is especially essential in industrial environments with sensitive data. The configuration requires creating certificates and adjusting broker settings to enable the secure port and reference the certificates.

Topology

flowchart LR     A[MQTTS Client] -->|Encrypted Connection| B[MQTT Broker with TLS]     B -->|Certificate Verification| C[CA Certificate]     B -->|Key Pair| D[Server Certificate & Private Key]     A -->|Client Certificate| E[Client Certificate & Private Key] 

In Context

• Typically used together with MQTT over TCP port 8883
• Related to: SSL, Certificates, PKI, Encryption algorithms
• Example use case: Industrial IoT communication, Smart Home systems