OL 9 must not have unauthorized IP tunnels configured.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-271863 | OL09-00-006010 | SV-271863r1092639_rule | Medium |
| Description |
| IP tunneling mechanisms can be used to bypass network filtering. If tunneling is required, it must be documented with the information system security officer (ISSO). |
| STIG | Date |
| Oracle Linux 9 Security Technical Implementation Guide | 2025-05-08 |
Details
| Check Text (C-75913r1092638_chk) |
| Verify that OL 9 does not have unauthorized IP tunnels configured. Determine if the IPsec service is active with the following command: $ systemctl status ipsec ipsec.service - Internet Key Exchange (IKE) Protocol Daemon for IPsec Loaded: loaded (/usr/lib/systemd/system/ipsec.service; disabled) Active: inactive (dead) If the IPsec service is active, check for configured IPsec connections ("conn"), with the following command: $ grep -rni conn /etc/ipsec.conf /etc/ipsec.d/ Verify any returned results are documented with the ISSO. If the IPsec tunnels are active and not approved, this is a finding. |
| Fix Text (F-75820r1092300_fix) |
| Remove all unapproved tunnels from the system, or document them with the ISSO. |