STIGQter STIGQter: STIG Summary: Oracle Linux 9 Security Technical Implementation Guide Version: 1 Release: 6 Benchmark Date: 01 Jul 2026:

OL 9 must be configured to prohibit or restrict the use of functions, ports, protocols, and/or services, as defined in the Ports, Protocols, and Services Management (PPSM) Category Assignments List (CAL) and vulnerability assessments.

DISA Rule

SV-271471r1091125_rule

Vulnerability Number

V-271471

Group Title

SRG-OS-000096-GPOS-00050

Rule Version

OL09-00-000222

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Update the firewall settings and/or running services to comply with the PPSM CLSA for the site or program and the PPSM CAL.

Then run the following command to load the newly created rule(s):

$ sudo firewall-cmd --reload

Check Contents

Verify OL 9 is configured to prohibit or restrict the use of functions, ports, protocols, and/or services that are unnecessary or prohibited.

Inspect the firewall configuration and running services to verify which services are currently active with the following command:

$ sudo firewall-cmd --list-all-zones
custom (active)
target: DROP
icmp-block-inversion: no
interfaces: ens33
sources:
services: dhcpv6-client dns http https ldaps rpc-bind ssh
ports:
masquerade: no
forward-ports:
icmp-blocks:
rich rules:

Ask the system administrator for the site or program PPSM Component Local Service Assessment (CLSA). Verify the services allowed by the firewall match the PPSM CLSA.

If there are additional ports, protocols, or services that are not in the PPSM CLSA, or there are ports, protocols, or services that are prohibited by the PPSM CAL, this is a finding.

Vulnerability Number

V-271471

Documentable

False

Rule Version

OL09-00-000222

Severity Override Guidance

Verify OL 9 is configured to prohibit or restrict the use of functions, ports, protocols, and/or services that are unnecessary or prohibited.

Inspect the firewall configuration and running services to verify which services are currently active with the following command:

$ sudo firewall-cmd --list-all-zones
custom (active)
target: DROP
icmp-block-inversion: no
interfaces: ens33
sources:
services: dhcpv6-client dns http https ldaps rpc-bind ssh
ports:
masquerade: no
forward-ports:
icmp-blocks:
rich rules:

Ask the system administrator for the site or program PPSM Component Local Service Assessment (CLSA). Verify the services allowed by the firewall match the PPSM CLSA.

If there are additional ports, protocols, or services that are not in the PPSM CLSA, or there are ports, protocols, or services that are prohibited by the PPSM CAL, this is a finding.

Check Content Reference

M

Target Key

5680