| 3.1.1 Disable IPv6 | CIS Fedora 19 Family Linux Server L2 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.4.2.1 Ensure ufw service is enabled - systemctl | CIS Ubuntu Linux 18.04 LXD Container L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.4.3.1 Ensure iptables are flushed - v4 | CIS Ubuntu Linux 18.04 LXD Container L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.4.3.2 Ensure a table exists | CIS Ubuntu Linux 18.04 LXD Container L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.4.3.6 Ensure default deny firewall policy - input | CIS Ubuntu Linux 18.04 LXD Container L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.4.3.6 Ensure default deny firewall policy - output | CIS Ubuntu Linux 18.04 LXD Container L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.4.3.8 Ensure nftables rules are permanent | CIS Ubuntu Linux 18.04 LXD Container L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.1.1 Ensure FirewallD is installed | CIS Fedora 19 Family Linux Workstation L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.1.1 Ensure iptables package is installed | CIS SUSE Linux Enterprise 12 v3.2.1 L1 Server | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.2 Ensure outbound and established connections are configured | CIS SUSE Linux Enterprise 12 v3.2.1 L1 Workstation | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.2 Ensure ufw is uninstalled or disabled with nftables | CIS Ubuntu Linux 16.04 LTS Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.3 Ensure iptables are flushed with nftables - v4 | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.4 Ensure default deny firewall policy | CIS SUSE Linux Enterprise 12 v3.2.1 L1 Server | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.4 Ensure iptables are flushed - iptables | CIS Fedora 19 Family Linux Workstation L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.5 Ensure a table exists | CIS Fedora 19 Family Linux Workstation L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.5 Ensure nftables base chains exist - forward | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.6 Ensure nftables loopback traffic is configured - v4 | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.7 Ensure loopback traffic is configured - 'ip sddr' | CIS Fedora 19 Family Linux Workstation L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.8 Ensure nftables default deny firewall policy - input | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.9 Ensure default deny firewall policy - hook forward | CIS Fedora 19 Family Linux Workstation L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.9 Ensure default deny firewall policy - hook input | CIS Fedora 19 Family Linux Workstation L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.10 Ensure nftables service is enabled | CIS Fedora 19 Family Linux Workstation L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.1.1 Ensure iptables packages are installed - iptables | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.1.3 Ensure firewalld is not installed or stopped and masked - is-enabled | CIS Fedora 19 Family Linux Workstation L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.2.1 Ensure iptables default deny firewall policy - 'Chain OUTPUT' | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.2.2 Ensure iptables loopback traffic is configured | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.2.6 Ensure iptables is enabled and running - status | CIS Fedora 19 Family Linux Server L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.2.6 Ensure iptables is enabled and running - status | CIS Fedora 19 Family Linux Workstation L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.3.1 Ensure ip6tables default deny firewall policy - 'Chain FORWARD' | CIS Ubuntu Linux 16.04 LTS Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.3.1 Ensure ip6tables default deny firewall policy - 'Chain INPUT' | CIS Ubuntu Linux 16.04 LTS Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.3.1 Ensure ip6tables default deny firewall policy - 'Chain INPUT' | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.3.1 Ensure IPv6 default deny firewall policy - Chain OUTPUT | CIS Fedora 19 Family Linux Workstation L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.3.2 Ensure IPv6 loopback traffic is configured - INPUT | CIS Fedora 19 Family Linux Workstation L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.3.4 Ensure ip6tables firewall rules exist for all open ports | CIS Ubuntu Linux 16.04 LTS Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.3.5 Ensure ip6tables rules are saved - OUTPUT | CIS Fedora 19 Family Linux Server L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.3.6 Ensure ip6tables is enabled and running - is-enabled | CIS Fedora 19 Family Linux Workstation L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.2.1 Ensure IPv4 default deny firewall policy - FORWARD | CIS Red Hat 6 Workstation L1 v3.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.2.1 Ensure IPv4 default deny firewall policy - INPUT | CIS Red Hat 6 Server L1 v3.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.2.1 Ensure IPv4 default deny firewall policy - OUTPUT | CIS Red Hat 6 Server L1 v3.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.2.1 Ensure IPv4 default deny firewall policy - OUTPUT | CIS Red Hat 6 Workstation L1 v3.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.2.2 Ensure IPv4 loopback traffic is configured - INPUT | CIS Red Hat 6 Workstation L1 v3.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.2.2 Ensure IPv4 loopback traffic is configured - OUTPUT | CIS Oracle Linux 6 Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.2.3 Ensure IPv4 outbound and established connections are configured | CIS Red Hat 6 Server L1 v3.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.3.1 Ensure IPv6 default deny firewall policy - FORWARD | CIS Oracle Linux 6 Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.3.1 Ensure IPv6 default deny firewall policy - FORWARD | CIS Red Hat 6 Workstation L1 v3.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.3.1 Ensure IPv6 default deny firewall policy - OUTPUT | CIS Oracle Linux 6 Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.3.1 Ensure IPv6 default deny firewall policy - OUTPUT | CIS Red Hat 6 Workstation L1 v3.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.3.3 Ensure IPv6 outbound and established connections are configured | CIS Oracle Linux 6 Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.3.4 Ensure IPv6 firewall rules exist for all open ports - iptables | CIS Red Hat 6 Server L1 v3.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 4.5.4 Create /etc/hosts.deny | CIS Red Hat Enterprise Linux 5 L1 v2.2.1 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
