sc-10-network-disconnect

name	SC-10_network-disconnect
description	Terminate the network connection associated with a communications session at the end of the session or after [organization-defined] of inactivity.
category	configuration
version	5.2.0
author	cyberstrike-official
tags	["nist","sp800-53","rev5","sc-10","sc"]
tech_stack	["aws","azure","gcp","linux","windows","network"]
cwe_ids	["CWE-311"]
chains_with	["AC-17","SC-23"]
prerequisites	[]
severity_boost	{"AC-17":"Chain with AC-17 for comprehensive security coverage","SC-23":"Chain with SC-23 for comprehensive security coverage"}

SC-10 Network Disconnect

High-Level Description

Family: System and Communications Protection (SC) Framework: NIST SP 800-53 Rev 5

Network disconnect applies to internal and external networks. Terminating network connections associated with specific communications sessions includes de-allocating TCP/IP address or port pairs at the operating system level and de-allocating the networking assignments at the application level if multiple application sessions are using a single operating system-level network connection. Periods of inactivity may be established by organizations and include time periods by type of network access or for specific network accesses.

What to Check

• Verify SC-10 Network Disconnect is documented in SSP
• Confirm control is operating effectively
• Review evidence of continuous monitoring for SC-10

How to Test

Step 1: Review Documentation

Examine the System Security Plan (SSP) and related artifacts for SC-10 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 encryption and network controls	cloud_audit_encryption
nmap	Network scanning	nmap -sV --script ssl-enum-ciphers

Remediation Guide

Control Statement

Terminate the network connection associated with a communications session at the end of the session or after [organization-defined] of inactivity.

Implementation Guidance

Network disconnect applies to internal and external networks. Terminating network connections associated with specific communications sessions includes de-allocating TCP/IP address or port pairs at the operating system level and de-allocating the networking assignments at the application level if multiple application sessions are using a single operating system-level network connection. Periods of inactivity may be established by organizations and include time periods by type of network access or for specific network accesses.