What OPC UA Security Covers
OPC UA security includes endpoint policies, message security modes, certificates, trust handling, and user authentication. In practice, this is where many otherwise straightforward browse jobs stop.
Why It Matters
- Certificate handling can block the first successful session.
- Sites often know the endpoint URL but not the accepted policy set.
- Public scoping should not imply routine write access when the proven path is read-oriented and certificate-sensitive.