5 Security reconciliation ToC Previous Next

5.2 Reconciliation of objectives with OPC UA security mechanisms ToC Previous Next

5.2.8 Availability ToC Previous Next

OPC UA minimizes the impact of Message flooding as described in 5.1.2.

Some attacks on Availability involve opening more Sessions than a Server can handle thereby causing the Server to fail or operate poorly. Servers reject Sessions that exceed their specified maximum number. Other aspects of OPC UA such as OPC UA Secure Conversation can also affect availability and are discussed in OPC 10000-6

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