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BSI 24/30484357 DC 2024

BSI 24/30484357 DC 2024

$13.70

BS EN IEC 62541-2 OPC Unified Architecture – Part 2: Security Model

Published By Publication Date Number of Pages
BSI 2024 47
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PDF Catalog

PDF Pages PDF Title
11 1 Scope
2 Normative References
12 3 Terms, definitions, and abbreviations
3.1 Terms and definitions
17 3.2 Abbreviations
3.3 Conventions for security model figures
4 OPC UA security architecture
4.1 OPC UA security environment
18 4.2 Security objectives
4.2.1 Overview
4.2.2 Authentication
19 4.2.3 Authorization
4.2.4 Confidentiality
4.2.5 Integrity
4.2.6 Non- Repudiation
4.2.7 Auditability
4.2.8 Availability
4.3 Security threats to OPC UA systems
4.3.1 Overview
4.3.2 Denial of Service
4.3.2.1 Overview
20 4.3.2.2 Message flooding
4.3.2.3 Resource Exhaustion
4.3.2.4 Application Crashes
4.3.3 Eavesdropping
21 4.3.4 Message spoofing
4.3.5 Message alteration
4.3.6 Message replay
4.3.7 Malformed Messages
4.3.8 Server profiling
22 4.3.9 Session hijacking
4.3.10 Rogue Server
4.3.11 Rogue Publisher
4.3.12 Compromising user credentials
4.3.13 Repudiation
4.4 OPC UA relationship to site security
23 4.5 OPC UA security architecture
4.5.1 Overview
24 4.5.2 Client / Server
25 4.5.3 Publish-Subscribe
4.5.3.1 Overview
4.5.3.2 Broker-less
26 4.5.3.3 Broker
4.6 SecurityPolicies
4.7 Security Profiles
27 4.8 Security Mode Settings
4.9 User Authentication
4.10 Application Authentication
4.11 User Authorization
28 4.12 Roles
4.13 OPC UA security related Services
29 4.14 Auditing
4.14.1 General
30 4.14.2 Single Client and Server
4.14.3 Aggregating Server
31 4.14.4 Aggregation through a non-auditing Server
32 4.14.5 Aggregating Server with service distribution
33 5 Security reconciliation
5.1 Reconciliation of threats with OPC UA security mechanisms
5.1.1 Overview
5.1.2 Denial of Service
5.1.2.1 Overview
5.1.2.2 Message flooding
34 5.1.2.3 Resource exhaustion
5.1.2.4 Application Crashes
5.1.3 Eavesdropping
5.1.4 Message spoofing
35 5.1.5 Message alteration
5.1.6 Message replay
5.1.7 Malformed Messages
5.1.8 Server profiling
5.1.9 Session hijacking
5.1.10 Rogue Server or Publisher
36 5.1.11 Compromising user credentials
5.1.12 Repudiation
5.2 Reconciliation of objectives with OPC UA security mechanisms
5.2.1 Overview
5.2.2 Application Authentication
5.2.3 User Authentication
5.2.4 Authorization
37 5.2.5 Confidentiality
5.2.6 Integrity
5.2.7 Auditability
5.2.8 Availability
38 6 Implementation and deployment considerations
6.1 Overview
6.2 Appropriate timeouts:
6.3 Strict Message processing
6.4 Random number generation
39 6.5 Special and reserved packets
6.6 Rate limiting and flow control
6.7 Administrative access
6.8 Cryptographic Keys
6.9 Alarm related guidance
40 6.10 Program access
6.11 Audit event management
6.12 OAuth2, JWT and User roles
6.13 HTTPs, TLS & Websockets
41 6.14 Reverse Connect
6.15 Passwords
6.16 Additional Security considerations
7 Unsecured Services
7.1 Overview
7.2 Multi Cast Discovery
42 7.3 Global Discovery Server Security
7.3.1 Overview
7.3.2 Rogue GDS
7.3.3 Threats against a GDS
43 7.3.4 Certificate management threats
8 Certificate management
8.1 Overview
8.2 Self signed certificate management
44 8.3 CA Signed Certificate management
45 8.4 GDS Certificate Management
8.4.1 Overview
8.4.2 Developers Certificate management

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BSI 24/30484357 DC 2024
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