Verify iptables Enabled The 'iptables' service can be enabled with the following command: '$ sudo systemctl enable iptables' The 'iptables' service provides the system's host-based firewalling capability for IPv4 and ICMP. Fix: # # Enable iptables.service for all systemd targets # systemctl enable iptables.service # # Start iptables.service if not currently running # systemctl start iptables.service oval:org.secpod.oval:def:48246 oval:org.secpod.oval:def:49010 oval:org.secpod.oval:def:48246 SCAP Repo OVAL Definition 2018-11-08