NIST 800-53 Rev 5

424 controls available

SC-7(18)high

Fail Secure

System and Communications Protection

Control Statement

Prevent systems from entering unsecure states in the event of an operational failure of a boundary protection device.

Discussion

Fail secure is a condition achieved by employing mechanisms to ensure that in the event of operational failures of boundary protection devices at managed interfaces, systems do not enter into unsecure states where intended security properties no longer hold. Managed interfaces include routers, firewalls, and application gateways that reside on protected subnetworks (commonly referred to as demilitarized zones). Failures of boundary protection devices cannot lead to or cause information external to the devices to enter the devices nor can failures permit unauthorized information releases.

Framework
NIST SP 800-53 Rev 5
Family
System and Communications Protection
Baselines
high

Related Frameworks

1 path across 1 framework
CCI1 mapping
CCI-001126
1.00
  • DISA · 2025-01-23 · disa_cci_list · equivalent

Related STIGs

79 STIGs reach this control through 70 CCIs. Expand a row to see the responsible NICE and O*NET roles.

Operating System — Server

1 STIG

Network Device

63 STIGs
Router Security Requirements Guide
52024-05-2835 of 108 findings match
Router Security Requirements Guide
V5R22025-09-1035 of 123 findings match
Show 55 more STIGs in this category →
Firewall Security Requirements Guide
32024-12-047 of 34 findings match
Firewall Security Requirements Guide
V3R32025-09-227 of 35 findings match
Application Layer Gateway Security Requirements Guide
V2R32025-09-155 of 160 findings match
Layer 2 Switch Security Requirements Guide
V3R42026-02-123 of 36 findings match
Layer 2 Switch Security Requirements Guide
32025-03-052 of 28 findings match
SDN Controller Security Requirements Guide
22024-05-282 of 34 findings match
Cisco ASA VPN Security Technical Implementation Guide
V2R22024-08-221 of 41 findings match

Web / Application Server

2 STIGs

Virtualization / Container

9 STIGs

Cloud / Identity Service

1 STIG

Endpoint Security Management

3 STIGs