OL 9 IP tunnels must use 140-3 approved cryptographic algorithms.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-271743 | OL09-00-002404 | SV-271743r1092635_rule | CCI-000068 | medium |
| Description | ||||
| Overriding the system crypto policy makes the behavior of the Libreswan service violate expectations and makes system configuration more fragmented. | ||||
| STIG | Date | |||
| Oracle Linux 9 Security Technical Implementation Guide | 2025-05-08 | |||
Details
Check Text (C-271743r1092635_chk)
Note: If the IPsec service is not installed, this requirement is Not Applicable.
Verify that 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.
Fix Text (F-75700r1092602_fix)
Configure IPsec to use the systemwide cryptographic policy.
Add the following line to "/etc/ipsec.conf":
include /etc/crypto-policies/back-ends/libreswan.config