Posts tagged "Security"
3 articles across the Voltrus blog.
This collection brings together every Security article published on the Voltrus blog. "OPC UA Security: Certificates, Encryption, and Auth Setup", "BLE Pairing and Bonding: Security Explained", "Modbus TCP Security Risks: Why It Is Not Safe and How to Protect It" — each one is a practical, hands-on guide written for engineers and system integrators. Whether you are choosing between protocols, troubleshooting a connection, or planning an integration, these articles cover the concepts, the trade-offs, and the step-by-step details you need.
OPC UA Security: Certificates, Encryption, and Auth Setup
OPC UA security explained. Security modes (None, Sign, SignAndEncrypt), security policies, X.509 certificates, mutual authentication, trust lists, and secure setup.
Read articleBLE Pairing and Bonding: Security Explained
Pairing vs bonding, LE Legacy vs LE Secure Connections (ECDH P-256), the four association models, the STK/LTK key hierarchy, AES-CCM encryption, IRK-based privacy, Security Mode 1 levels, and how to debug auth failures on macOS.
Read articleModbus TCP Security Risks: Why It Is Not Safe and How to Protect It
Modbus TCP has no authentication, encryption, or integrity — anyone on the network can read and write every register. Segment, firewall, and tunnel it; never expose TCP/502.
Read article