RHEL-09-671020 RHEL 9 IP tunnels must use FIPS 140-3 approved cryptographic algorithms.
All changes in this version
Maps to AC-17(2) via CCI-000068
Title
RHEL 9 IP tunnels must use FIPS 140-3 approved cryptographic algorithms.
Control
Verify that the IPsec service uses the system crypto policy with the following command: Note: If the ipsec service is not installed, this requirement is Not Applicable. $ sudo 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.
Discussion
Overriding the system crypto policy makes the behavior of the Libreswan service violate expectations, and makes system configuration more fragmented.
Related controls
CCI-000068
Fix
Configure Libreswan to use the system cryptographic policy. Add the following line to "/etc/ipsec.conf": include /etc/crypto-policies/back-ends/libreswan.config