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The ALG must implement physically or logically separate subnetworks to isolate organization-defined critical system components and functions.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-263542SRG-NET-000715-ALG-000120SV-263542r1137562_ruleCCI-004891medium
Description
Separating critical system components and functions from other noncritical system components and functions through separate subnetworks may be necessary to reduce susceptibility to a catastrophic or debilitating breach or compromise that results in system failure. For example, physically separating the command and control function from the in-flight entertainment function through separate subnetworks in a commercial aircraft provides an increased level of assurance in the trustworthiness of critical system functions. This requirement also applies to Zero Trust initiatives.
STIGDate
Application Layer Gateway Security Requirements Guide2025-09-15

Related Frameworks

1 mapping across 3 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (3) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

CLD-03Cloud Infrastructure Security Subnet
0.50
NET-03.8Separate Subnet for Connecting to Different Security Domains
0.50
NET-06.1Security Management Subnets
0.50
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (8) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-17(2)Protection of Confidentiality and Integrity Using Encryption
1.00
AC-3Access Enforcement
1.00
CM-6Configuration Settings
1.00
SC-47Alternate Communications Paths
1.00
SC-7Boundary Protection
1.00
SC-7(11)Restrict Incoming Communications Traffic
1.00
SC-7(29)Separate Subnets to Isolate Functions
1.00
SC-8Transmission Confidentiality and Integrity
1.00
CCI1 mapping
CCI-004891
1.00

Details

Check Text (C-263542r1137562_chk)

Verify the ALG is configured to implement physically or logically separate subnetworks to isolate organization-defined critical system components and functions. If the ALG is not configured to implement physically or logically separate subnetworks to isolate organization-defined critical system components and functions, this is a finding.

Fix Text (F-67350r981656_fix)

Configure the ALG to implement physically or logically separate subnetworks to isolate organization-defined critical system components and functions.