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NIST CSF 2.0
Browse NIST CSF 2.0
ID.AM-01 ID.AM-02 ID.AM-03 ID.AM-04 ID.AM-05 ID.AM-07 ID.AM-08
Network Communications and Data Flows
ID.AM-03: Representations of the organization's authorized network communication and internal and external network data flows are maintained
  • Ex1:  Maintain baselines of communication and data flows within the organization’s wired and wireless networks
  • Ex2:  Maintain baselines of communication and data flows between the organization and third parties
  • Ex3: Maintain baselines of communication and data flows for the organization’s infrastructure-as-a-service (IaaS) usage
  • Ex4:  Maintain documentation of expected network ports, protocols, and services that are typically used among authorized systems
Tier
Not Applicable - Not applicable
No - The outcome(s) have not been meaningfully implemented.
Tier 1: Partial - Application of the organizational cybersecurity risk strategy is managed in an ad hoc manner. Prioritization is ad hoc and not formally based on objectives or threat environment.
Tier 2: Risk Informed - Risk management practices are approved by management but may not be established as organization-wide policy. The prioritization of cybersecurity activities and protection needs is directly informed by organizational risk objectives, the threat environment, or business/mission requirements.
Tier 3: Repeatable - The organization’s risk management practices are formally approved and expressed as policy. Risk-informed policies, processes, and procedures are defined, implemented as intended, and reviewed. Organizational cybersecurity practices are regularly updated based on the application of risk management processes to changes in business/mission requirements, threats, and technological landscape.
Tier 4: Adaptive - There is an organization-wide approach to managing cybersecurity risks that uses risk-informed policies, processes, and procedures to address potential cybersecurity events.
Description

Representations of the organization's authorized network communication and internal and external network data flows are maintained