KSI-CNA-OFAOptimizing for Availability
Machine-based information resources are persistently reviewed to ensure they are appropriately optimized for high availability and rapid recovery.
Mapped NIST 800-53 controls (0)
The mark says whether an authored AWS recipe fetches evidence for the control; the tier strip shows which Rev5 baselines also require it — where automated KSI evidence doubles as Rev5 control evidence. = in the class B, C and D baselines, left to right
- recipe— an authored recipe collects evidence for this control
- KSI only— a Key Security Indicator reaches it, but no recipe is authored yet
- orphan— no Key Security Indicator reaches it — a person writes it up instead
Collect evidence (0)
Authored AWS and pipeline recipes whose output is evidence for KSI-CNA-OFA. This mapping is this project’s opinion (AWS overlay v3.0.0, pipeline overlay v0.8.0), versioned separately from the dataset — the upstream FedRAMP rules name none of these tools.
No authored recipe proves KSI-CNA-OFA yet. That is an authoring gap, not a claim that nothing can — the unwritten indicators are enumerated on the class B narrative register.
Default evidence owed by every indicator (5)
From info.default_artifacts.KSI — no indicator carries its own artifacts; requirement-specific evidence lives on /evidence.
- Explanation of measures (and their objectives) that demonstrate the Key Security Indicator, or an explanation of the reason and resulting risk to customers for not having measures available for that Key Security Indicator.
- Explanation of the cycle for any measures that are implemented persistently (if applicable).
- Verification that the measures demonstrate the Key Security Indicator, or that the reason for not having them is accepted.
- Verification that the automation in place is accurate and sufficient to demonstrate appropriate measures for the Key Security Indicator, or that automation is not necessary for each measure.
- Validation that the measures are accurately produced and are in place and working as intended, or that the reason for not having them is valid.
Defined terms used (3)
- Information Resource
- Has the meaning from 44 USC § 3502 (6): "information and related resources, such as personnel, equipment, funds, and information technology." This includes any aspect of the cloud service offering, both technical and managerial, including everything that makes up the business of the offering from non-machine-based information resources like organizational policies, procedures, employees, etc. to machine-based information resources like hardware, software, cloud services, code, etc.
- Machine-Based (Information Resources)
- Any information technology information resource—including systems, processes, software, hardware, services, cloud-native capabilities, and any other such capability, component, or resource—that relies primarily on mechanical or electronic devices (i.e. computers) for operation.
- Persistently
- Occurring in a firm, steady way that is repeated over a long period of time in spite of obstacles or difficulties. Persistent activities may vary between actors, may occur irregularly, and may include interruptions or waiting periods between cycles. These attributes of persistent activities should be intentional, understood, and documented; the status of persistent activities will always be known.
The Cloud Native Architecture run (8)
6/8 have an authored AWS recipe- 1 authored recipeKSI-CNA-DFPDefining Functionality and Privileges
- no authored recipeKSI-CNA-EISEnforcing Intended State
- 1 authored recipeKSI-CNA-IBPImplementing Best Practices
- 3 authored recipesKSI-CNA-MATMinimizing Attack Surface
- no authored recipeKSI-CNA-OFAOptimizing for Availabilityyou are here
- 2 authored recipesKSI-CNA-RNTRestricting Network Traffic
- 1 authored recipeKSI-CNA-RVPReviewing Protections
- 3 authored recipesKSI-CNA-ULNUsing Logical Networking