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V-281339

CAT II (Medium)

RHEL 10 must not have unauthorized IP tunnels configured.

Rule ID

SV-281339r1167167_rule

STIG

Red Hat Enterprise Linux 10 Security Technical Implementation Guide

Version

V1R1

CCIs

CCI-000213

Discussion

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).

Check Content

Verify RHEL 10 does not have unauthorized IP tunnels configured.

Determine if the IPsec service is active with the following command:

$ systemctl is-active ipsec
Inactive

If the IPsec service is active, check for configured IPsec connections ("conn"), with the following command:

$ sudo 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

Configure RHEL 10 to not have unauthorized IP tunnels configured.

Remove all unapproved tunnels from the system, or document them with the ISSO.