IR-4(2)—Incident Handling | Dynamic Reconfiguration
IL4 High
IL5
IL6
>Control Description
Include the following types of dynamic reconfiguration for ⚙organization-defined system components as part of the incident response capability: ⚙organization-defined types of dynamic reconfiguration.
>DoD Impact Level Requirements
FedRAMP Parameter Values
IR-4 (2)-1 [all network, data storage, and computing devices]
>Discussion
Dynamic reconfiguration includes changes to router rules, access control lists, intrusion detection or prevention system parameters, and filter rules for guards or firewalls. Organizations may perform dynamic reconfiguration of systems to stop attacks, misdirect attackers, and isolate components of systems, thus limiting the extent of the damage from breaches or compromises. Organizations include specific time frames for achieving the reconfiguration of systems in the definition of the reconfiguration capability, considering the potential need for rapid response to effectively address cyber threats.
>Related Controls
>Assessment Interview Topics
Questions assessors commonly ask
Process & Governance:
- •What formal policies and procedures govern the implementation of IR-4(2) (Dynamic Reconfiguration)?
- •Who are the designated roles responsible for implementing, maintaining, and monitoring IR-4(2)?
- •How frequently is the IR-4(2) policy reviewed and updated, and what triggers policy changes?
- •What governance structure ensures IR-4(2) requirements are consistently applied across all systems?
Technical Implementation:
- •Describe the specific technical mechanisms or controls used to enforce IR-4(2) requirements.
- •What automated tools, systems, or technologies are deployed to implement IR-4(2)?
- •How is IR-4(2) integrated into your system architecture and overall security posture?
- •What configuration settings, parameters, or technical specifications enforce IR-4(2) requirements?
Evidence & Documentation:
- •What documentation demonstrates the complete implementation of IR-4(2)?
- •What audit logs, records, reports, or monitoring data validate IR-4(2) compliance?
- •Can you provide evidence of periodic reviews, assessments, or testing of IR-4(2) effectiveness?
- •What artifacts would you present during a FedRAMP assessment to demonstrate IR-4(2) compliance?
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