What is the most common gap auditors find on PR.IR-01?

Segmentation flat across business units

`PR.IR-01` Networks and environments are protected from unauthorized logical access and usage

Q: What evidence do auditors commonly ask for on PR.IR-01 Networks and environments are protected from unauthorized logical access and usage?

Network segmentation design with zones and trust levels; Firewall and access control list governance; Zero trust network access deployment evidence; External attack surface management reports; Segmentation effectiveness testing results.

Networks and environments are protected from unauthorized logical access and usage

Source: NIST CSF 2.0, PR.IR-01. The statement above is our statement of the clause, read from the published text and cited so you can check it against the official text, not the instrument verbatim. Open NIST CSF 2.0 in the compliance library.

artefacts

held by a system

at each review

moderate

to go live

Identity provider / directory

where the evidence lives

teal = a system already holds it · olive = produced at each review. To go live: easy when half or more of the artefacts are already held by a system, moderate from a quarter to a half, hard below a quarter.

These are the artefacts auditors commonly ask for on this requirement, our guidance rather than text from the standard. Your assessor decides what is sufficient in your context, and asks for samples across the period when a report covers one.

system holds itEvidence a system already holds

Firewall and access control list governance · Identity provider / directory
Zero trust network access deployment evidence · Source control / CI pipeline

periodic reviewEvidence produced at each review

External attack surface management reports · Document repository
Segmentation effectiveness testing results · Cloud console / configuration management

governing documentDocuments that govern the control

Network segmentation design with zones and trust levels · Policy repository / GRC workspace

First move

Start with the 2 of 5 artefacts that already live in a system (Identity provider / directory); keep the periodic reviews but log each one as a dated record with a named reviewer.

Common gaps auditors find

Segmentation flat across business units
Firewall rules grow without rationalization
Attack surface assets unknown
Effectiveness testing never performed

Do this for your whole sheet

Paste the rows you run your controls from and get this mapping for every control at once, with the periodic-review ones flagged and a first move per row. No account for the first run.

Build my evidence sheet

PR.DS-11 Backups of data are created, protected, maintained, and tested · PR.IR-02 The organization's technology assets are protected from environmental threats