STIGQter: STIG Summary: Tri-Lab Operating System Stack (TOSS) 4 Security Technical Implementation Guide Version: 2 Release: 6 Benchmark Date: 01 Jul 2026:

TOSS must enable the hardware random number generator entropy gatherer service.

DISA Rule

SV-253115r991589_rule

Vulnerability Number

V-253115

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

TOSS-04-040740

Severity

CAT II

CCI(s)

• CCI-000366 - Implement the security configuration settings.

Weight

10

Fix Recommendation

Start the rngd service and enable the rngd service with the following commands:

$ sudo systemctl start rngd.service

$ sudo systemctl enable rngd.service

Check Contents

Check that TOSS has enabled the hardware random number generator entropy gatherer service.

Verify the rngd service is enabled and active with the following commands:

$ sudo systemctl is-enabled rngd

enabled

$ sudo systemctl is-active rngd

active

If the service is not "enable and "active", this is a finding.

Vulnerability Number

V-253115

Documentable

False

Rule Version

TOSS-04-040740

Severity Override Guidance

Check that TOSS has enabled the hardware random number generator entropy gatherer service.

Verify the rngd service is enabled and active with the following commands:

$ sudo systemctl is-enabled rngd

enabled

$ sudo systemctl is-active rngd

active

If the service is not "enable and "active", this is a finding.

Check Content Reference

M

Target Key

5469