SCADA - Siemens Spectrum Power

SCADA - Siemens Spectrum Power

Nota importada desde Inbox durante consolidacion bulk.

Resumen

Documento de requisitos de ciberseguridad para el producto Siemens Spectrum Power 7 (SCADA/EMS), estructurado segun el NIST Cybersecurity Framework. Cubre seis dominios principales: security monitoring, infrastructure security, identity management, data protection, disaster recovery/business continuity y governance. Incluye una tabla detallada de 19 requisitos especificos (OC-08 a OC-82), descripcion funcional completa de todos los dominios NIST, y documentacion de la arquitectura de red y hardware del sistema.

Contenido Principal

Dominios de Seguridad Principales

1. Security Monitoring

  • Basic level of security event generation is required
  • Security logs must be stored in a centralized and protected repository (minimum 6 months)
  • Audit trails must be activated across the entire infrastructure to detect improper operations
  • Logs must cover: privileged user actions, system configuration changes, failed login attempts, suspicious activities
  • Security and audit event logs must be immutable (OC-15)

2. Infrastructure Security

  • VPN connections must terminate in the DMZ zone (OC-100)
  • Perimeter security measures including encrypted transmission via SSL (OC-101)
  • Connection via proprietary protocols to Purdue Level 2 (OT) DCS systems (OC-129)
  • Firewalls and intrusion detection systems must be in place

3. Identity Management and Access Control

  • Centralized identity control via Identity Provider (IdP) (OC-25)
  • Credential management procedure with minimum security requirements (OC-187)
  • Identification of local accounts not centrally managed (OC-23)
  • Proper management of user and administrator authentication on all components (OC-30)
  • Change management procedure existence (OC-189)

4. Data Protection

  • Confidentiality and integrity of at-rest information guaranteed (OC-46)
  • Confidentiality and integrity of in-transit information via HTTPS/TLS (OC-47)
  • Sensitive information from production must not be used in test environments without treatment (OC-61)
  • Geographical location of data documented (OC-42)

5. Disaster Recovery and Business Continuity

  • Redundancy, recovery, and backup mechanisms for high-value/critical assets (OC-68)
  • Backups stored offline and encrypted, accessible only to authorized persons
  • Regular backup testing

6. Governance

  • Policies aligned with IT regulations/standards: NIST, ISO 27001 (OC-41)
  • All platforms must be hardened (OC-78)
  • Infrastructure must have a high degree of reliability (OC-82)

Requirements Table (OC Codes)

Code Requirement
OC-08 Basic security event generation (privileged actions, config changes, failed logins, suspicious activities)
OC-10 Centralized and protected internal log repository
OC-15 Immutable security and audit event logs
OC-23 Identification of local accounts not centrally managed
OC-25 User/service accounts managed by IdP
OC-30 Proper authentication management on all components
OC-41 Policies aligned with NIST, ISO 27001
OC-42 Geographical location of data
OC-46 Confidentiality and integrity of at-rest information
OC-47 Confidentiality and integrity of in-transit information
OC-61 Production data not used in test without treatment
OC-68 Redundancy, recovery, and backup mechanisms
OC-78 All platforms hardened
OC-82 High reliability infrastructure
OC-100 VPN terminations in DMZ zone
OC-101 Perimeter security with SSL encryption
OC-129 Connection via proprietary protocols to Purdue Level 2 (OT) DCS
OC-187 Credential management procedure
OC-189 Change management procedure

NIST CSF Mapping (Functional Overview)

The document covers all NIST CSF domains:

  • Identify: Asset Management, Business Environment, Governance, Risk Assessment, Risk Management Strategy, Supply Chain Risk Management
  • Protect: Identity Management/Authentication/Access Control, Awareness and Training, Data Security, Information Protection Processes, Maintenance, Protective Technology
  • Detect: Anomalies and Events, Security Continuous Monitoring, Detection Processes
  • Respond: Response Planning, Communications, Analysis, Mitigation, Improvements
  • Recover: Recovery Planning, Communications

System Architecture

Security Triad (SCADA/EMS order): Availability > Integrity > Confidentiality

Network LANs:

  • Oracle Access LAN
  • Backup LAN
  • Process LAN
  • FrontEnd LAN
  • Lights out Management LAN

Server Nodes: StoreAll 8800 Node, ADM/HIS, RTC, CDNA, TNA

Communication Networks: Multisite Communication, Emergency COR communication, Backup Communication, Office LAN Communication

Hardware: Catalyst 2960-S Series switches with specific port assignments; DIMMs, FANS, PROCS, NICs with documented configurations

Emphasis on: RBAC, encryption, secure communication protocols

Puntos Clave

  • El orden de la triada en SCADA/EMS es invertido: Disponibilidad > Integridad > Confidencialidad
  • 19 requisitos OC especificos cubren desde logging hasta hardening
  • VPN debe terminar siempre en DMZ, nunca directamente en la red OT
  • Los logs deben ser inmutables y almacenarse minimo 6 meses
  • La conexion a Purdue Level 2 (OT) usa protocolos propietarios (OC-129)

Aplicacion Practica

  • Usar como checklist de auditoria para entornos SCADA/ICS
  • Mapear los requisitos OC contra controles existentes en auditorias de cumplimiento
  • Referencia para documentacion de arquitectura de red en entornos de energia

Referencias

  • scada-acronimos-comunicaciones -- Glosario de acronimos ICS y protocolos industriales
  • NIST Cybersecurity Framework
  • ISO 27001
  • Purdue Model for ICS/SCADA

Themes