Oracle Linux 9 Security Technical Implementation Guide

The Oracle Linux 9 Security Technical Implementation Guide (V1 R7) has 450 STIG checks. New to STIG checklists? Read What is a STIG checklist?, CKL vs CKLB, and STIG vs SCAP benchmark.

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Severity

Version

V1 · R7

CurrentPublished Wed Sep 30 2026

OL 9 IP tunnels must use 140-3 approved cryptographic algorithms.

Oracle Linux 9 Security Technical Implementation Guide

Assessment Title

Rule Text

OL 9 IP tunnels must use 140-3 approved cryptographic algorithms.

Description

Discussion Text

Overriding the system crypto policy makes the behavior of the Libreswan service violate expectations and makes system configuration more fragmented.

New to STIG checklists? Read What is a STIG checklist? and CKL vs CKLB.

Objective

V-271743

Rule

SV-271743r1184204_rule

Severity

high

Rule Version

OL09-00-002404

Documentable

false

IA Controls

NIST SP 800-53

Rev 5

Assessment Procedure

Check Text

Note: If the IPsec service is not installed, this requirement is Not Applicable.

Verify the IPsec service uses the systemwide cryptographic policy with the following command:

$ grep include /etc/ipsec.conf /etc/ipsec.d/*.conf
/etc/ipsec.conf:include /etc/crypto-policies/back-ends/libreswan.config

If the IPsec configuration file does not contain "include /etc/crypto-policies/back-ends/libreswan.config", this is a finding.

Implementation Procedure

Fix Text

Configure IPsec to use the systemwide cryptographic policy.

Add the following line to "/etc/ipsec.conf":

include /etc/crypto-policies/back-ends/libreswan.config

STIG check 304 of 450 in the Oracle Linux 9 STIG checklist

← Previous · V-271742OL 9 debug-shell systemd service must be disabled.Next · V-271744 →OL 9 must have mail aliases to notify the information system security officer (ISSO) and system administrator (SA) (at a minimum) in the event of an audit processing failure.