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 | 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-75793r1092601_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 |