TheArtOfService
NIST SP 800-171 Rev 3FedRAMP Moderate

NIST SP 800-171 Rev 3 covers 45.5% of FedRAMP Moderate

147 of the 323 controls in FedRAMP Moderate are already satisfied by evidence you collected for NIST SP 800-171 Rev 3. 176 are genuine gaps. Every claim below was judged against both control sets and then argued against; the ones that did not survive are published further down with the reason each failed.

45.5%
of the target already covered
147
controls evidenced
176
genuine gaps
0
claims rejected in review

This number is directional. It says how much of FedRAMP Moderate your NIST SP 800-171 Rev 3 evidence satisfies. The reverse pair is a different number, often very different, because a security standard has enormous depth for access control and almost none for lawful basis or data subject rights.

218 candidate mappings were examined and 0 were removed. Signed off 2026-08-19, review level machine verified. Mappings were judged by Claude Code rather than read line by line by a practitioner. Every claim shows its reasoning so you can check it. Ask and a practitioner will review this pair.

Where the gaps are

Coverage is never evenly spread. A source standard usually satisfies one part of a target almost completely and barely touches another, and which part is which is the thing worth knowing before you plan the work.

MP - Media Protection6 of 7 evidenced, 1 to do
AT - Awareness and Training5 of 6 evidenced, 1 to do
AU - Audit and Accountability13 of 16 evidenced, 3 to do
AC - Access Control30 of 43 evidenced, 13 to do
MA - Maintenance6 of 10 evidenced, 4 to do
CM - Configuration Management16 of 27 evidenced, 11 to do
SC - System and Communications Protection16 of 29 evidenced, 13 to do
IA - Identification and Authentication13 of 27 evidenced, 14 to do
RA - Risk Assessment5 of 11 evidenced, 6 to do
IR - Incident Response7 of 17 evidenced, 10 to do
PS - Personnel Security4 of 10 evidenced, 6 to do
SR - Supply Chain Risk Management4 of 12 evidenced, 8 to do
PE - Physical and Environmental Protection6 of 19 evidenced, 13 to do
CA - Assessment, Authorization, and Monitoring4 of 14 evidenced, 10 to do
PL - Planning2 of 7 evidenced, 5 to do
SI - System and Information Integrity6 of 24 evidenced, 18 to do
SA - System and Services Acquisition3 of 21 evidenced, 18 to do
CP - Contingency Planning1 of 23 evidenced, 22 to do

Theme level, not control level, deliberately. The per-control list of what is evidenced and what is a gap is the report itself, so publishing it here would be publishing the thing being sold.

Claims that held

A sample. Each one names the control whose evidence does the work, the control it satisfies, and why.

03.15.01AC-1argued against and upheld
Policy and Procedures

Policy and procedures required for each requirement family including access control.

03.01.10AC-11argued against and upheld
Device Lock

Device lock after inactivity or on user request with re authentication is the same control.

03.01.11AC-12argued against and upheld
Session Termination

Automatic session termination after defined conditions or trigger events is the same.

03.01.12AC-17argued against and upheld
Remote Access

Remote access usage restrictions, configuration requirements and authorization are the same.

03.13.08AC-17(2)argued against and upheld
Protection of Confidentiality and Integrity Using Encryption

Cryptographic mechanisms preventing disclosure of CUI in transmission cover remote sessions.

03.01.12AC-17(3)argued against and upheld
Managed Access Control Points

The source requires remote access be routed via managed access control points.

03.01.12AC-17(4)argued against and upheld
Privileged Commands and Access

The source permits only approved remote execution of privileged commands.

03.01.16AC-18argued against and upheld
Wireless Access

Wireless usage restrictions, configuration requirements and authorization are the same.

Claims that did not hold

Nothing proposed for this pair was rejected in review. That is unusual and worth knowing rather than hiding: it means the candidate set was small and every candidate held.

The full report

Everything above is a sample. The report is every evidenced control and every gap, with the reasoning and the source document behind each one, in a form you can hand to an assessor. $299, emailed immediately.

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