Skip to main content

NET-44: Resource Containment

NET 3 — Low Protect

Automated mechanisms exist to enforce resource containment protections that remove or quarantine a resource's access to other resources.

Renumbered: Formerly NET-08.4 in SCF 2025.4.

Control Question: Does the organization use automated mechanisms to enforce resource containment protections that remove or quarantine a resource's access to other resources?

General (1)
Framework Mapping Values
NIST 800-207 NIST Tenet 4 NIST Tenet 5
US (1)
Framework Mapping Values
USA Federal DHS CISA TIC 3.0 3.PEP.NE.RCONT
APAC (1)
Framework Mapping Values
APAC Australia ISM June 2026 ISM-1778 ISM-1779

Capability Maturity Model

Level 0 — Not Performed

Practices are non-existent, based on the inability to demonstrate an implemented and operational capability. A reasonable person would conclude the control is not being performed.

Level 1 — Performed Informally

Network Security (NET) domain capabilities are ad hoc and inconsistent. Capability criteria associated with this control may include: ▪ Policies, standards & procedures associated with NET domain capabilities provide limited coverage due to the depth and breadth of the existing documentation. ▪ Network security-related activities are decentralized (e.g., a localized/regionalized function) and uses non-standardized methods to implement secure, resilient and compliant practices.

Level 2 — Planned & Tracked

SCR-CMM Level 2 criteria definitions are not available for this control: ▪ A reasonable person would conclude a well-defined and standardized process is required. ▪ At this level of maturity, the “requirements-driven” nature of performing the control is focused on a localized and/or regionalized implementation, not uniform and consistent across the organization. ▪ Requirements are narrowly scoped for applicability and are primarily derived from compliance obligations (e.g., laws, regulations and contracts).

Level 3 — Well Defined

Network Security (NET) capabilities are standardized across the entity for applicability to People, Processes, Technologies, Data and/or Facilities (PPTDF) to ensure consistency for Technology Assets, Applications, Services and/or Data (TAASD). Capability criteria associated with this control reasonably expect the following criteria to exist: ▪ Policies and standards associated with NET domain capabilities are formally documented and centrally-managed by the entity's Governance, Risk & Compliance (GRC) team, or similar function. ▪ Standardized Operating Procedures (SOP) associated with NET domain capabilities are well-documented and kept current by process owners. ▪ A network security management team, or similar function, is appropriately staffed and supported to implement and maintain NET domain capabilities. ▪ Technology is leveraged to enhance the efficiency and accuracy of network security operations (e.g., network management solution and log aggregator). ▪ The entity's Governance, Risk & Compliance (GRC) team, or similar function, works with business stakeholders and process owners to appropriately scope and reasonably implement cybersecurity and data protection controls associated with NET domain capabilities to address Minimum Compliance Requirements (MCR) (e.g., applicable statutory, regulatory and/or contractual requirements) and Discretionary Security Requirements (DSR) (e.g., entity-required controls). ▪ Secure Baseline Configurations (SBC) enforce the principles of least privileges and least functionality for boundary protection technologies. ▪ An implemented and operational capability exists to automatically enforce resource containment protections that remove or quarantine a resource's access to other resources.

Level 4 — Quantitatively Controlled

Utilize SCR-CMM Level 3 criteria definitions: ▪ There are no defined Level 4 criteria, since it is reasonable to assume a quantitatively-controlled process is not necessary to operationalize this control. ▪ While it may be possible to develop “metrics-driven” capabilities for this control, the criteria would be organization-specific to define.

Level 5 — Continuously Improving

Utilize SCR-CMM Level 3 or Level 4 (if available) criteria definitions: ▪ There are no defined Level 5 criteria, since it is reasonable to assume a continuously-improving process is not necessary to operationalize this control. ▪ Level 5 capabilities should be considered “world-class” where the control builds on Level 4 capabilities, but are continuously improving through Artificial Intelligence (AI) and/or Machine Learning (ML) technologies. ▪ While it may be possible to develop responsive capabilities for this control through the use of AI and/or ML technologies, the criteria would be organization-specific to define.

Assessment Objectives

  1. NET-44_A01 resource containment protections exist that remove or quarantine a resource’s access to other resources.

Technology Recommendations

Micro/Small

  • Isolate affected resources during security incidents

Small

  • Resource isolation procedure for incidents
  • Shutdown/isolate procedures

Medium

  • Formal resource containment policy
  • Network-level isolation procedures

Large

  • Network-level resource containment capabilities
  • Automated quarantine via NAC

Enterprise

  • Enterprise SOAR with automated resource containment
  • Network quarantine via NAC/SDN
  • Automated threat response playbooks

The Secure Controls Framework (SCF) is maintained by SCF Council. Use of SCF content is subject to the SCF Terms & Conditions.

Manage this control in SCF Connect

Track implementation status, collect evidence, and map controls to your compliance frameworks automatically.