ac-17-9-disconnect-or-disable-access

name	AC-17(9)_disconnect-or-disable-access
description	Provide the capability to disconnect or disable remote access to the system within [organization-defined].
category	authorization
version	5.2.0
author	cyberstrike-official
tags	["nist","sp800-53","rev5","ac-17-9","ac","enhancement"]
tech_stack	["aws","azure","gcp","linux","windows"]
cwe_ids	["CWE-284"]
chains_with	[]
prerequisites	["AC-17"]
severity_boost	{}

AC-17(9) Disconnect or Disable Access

Enhancement of: AC-17

High-Level Description

Family: Access Control (AC) Framework: NIST SP 800-53 Rev 5

The speed of system disconnect or disablement varies based on the criticality of missions or business functions and the need to eliminate immediate or future remote access to systems.

What to Check

• Verify AC-17(9) Disconnect or Disable Access is documented in SSP
• Confirm control is operating effectively
• Review evidence of continuous monitoring for AC-17(9)
• Verify enhancement builds upon base control AC-17

How to Test

Step 1: Review Documentation

Examine the System Security Plan (SSP) and related artifacts for AC-17(9) implementation details. Verify the organization has documented how this control is satisfied.

Step 2: Validate Implementation

# For cloud environments, use cloud-audit-mcp tools
# For on-premises, review system configurations directly

# Example: Check if account management policies exist
grep -r "account.management\|access.control" /etc/security/ 2>/dev/null

Step 3: Test Operating Effectiveness

Verify the control is actively functioning, not just documented. Check logs, configurations, and operational evidence.

Tools

Tool	Purpose	Usage
cloud-audit-mcp	Check IAM policies and access controls	cloud_audit_iam_policies
hackbrowser-mcp	Test web application access controls	browser_auth_test

Remediation Guide

Control Statement

Provide the capability to disconnect or disable remote access to the system within [organization-defined].

Implementation Guidance

The speed of system disconnect or disablement varies based on the criticality of missions or business functions and the need to eliminate immediate or future remote access to systems.

Risk Assessment

Finding	Severity