EvidenceSheet
CIS Controls v8.1 · CIS Control 12: Network Infrastructure Management

12.2 Establish and Maintain a Secure Network Architecture

Design and keep up a secure network architecture that addresses, at least, segmentation, least privilege and availability. Implementation goes beyond documents to include policy and design components. Implementation Groups: IG1, IG2 and IG3 (part of the IG1 essential cyber hygiene baseline, so every enterprise applies it). Asset type: Network. Security function: Protect.

Source: CIS Controls v8.1, 12.2. 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 CIS Controls v8.1 in the compliance library.

Scope: Implementation Groups: IG1, IG2, IG3. Security function: Protect; asset type: Network.

Each safeguard shows its Implementation Groups. IG1 is the essential baseline for every enterprise, IG2 adds to it, IG3 is all 153. Version 8.1 adds the Govern security function and asks for more processes to be documented; numbering is unchanged from v8.

3
artefacts
0
held by a system
1
at each review
hard
to go live
Policy repository / GRC workspace
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

none for this control

periodic reviewEvidence produced at each review

  • Design review records · Cloud console / configuration management

governing documentDocuments that govern the control

  • Network architecture design showing segmentation zones and trust boundaries · Policy repository / GRC workspace
  • Network security policy covering least privilege and availability · Policy repository / GRC workspace

First move

No system holds this evidence for you: it is people and documents. Reminders and routing to the owner still save time. Put the document under version control with an owner and review date, and log each review as a record with reviewer and date.

Common gaps auditors find

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.

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12.1 Ensure Network Infrastructure is Up-to-Date · 12.3 Securely Manage Network Infrastructure