Valontir

NIST 800-171 · System and Communications Protection

Requirement 3.13.6

SPRS weight
SPRS weight: 5
POA&M eligibility
Not POA&M-eligible
Assessment objectives
2 assessment objectives

Official requirement text

Deny network communications traffic by default and allow network communications traffic by exception (i.e., deny all, permit by exception).

Assessment objectives

Assessors don’t evaluate the requirement as one sentence; they walk these objectives one by one. Each must be met for the requirement to score.

  1. 3.13.6[a]network communications traffic is denied by default.
  2. 3.13.6[b]network communications traffic is allowed by exception.

Inside Valontir, this requirement carries a full plain-English guide: what it asks in normal words, what good looks like in a small shop, the evidence an assessor accepts, the common gaps that cost points, and a plain reading of every assessment objective shown above. See it in a demo.