| 3.1.1 Disable IPv6 | CIS Ubuntu Linux 16.04 LTS Server L2 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.1.1 Ensure default deny firewall policy - Chain INPUT | CIS Debian 9 Server L1 v1.0.1 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.1.1 Ensure default deny firewall policy - Chain OUTPUT | CIS Debian 9 Workstation L1 v1.0.1 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.1.1 Ensure iptables package is installed | CIS SUSE Linux Enterprise 12 v3.2.1 L1 Workstation | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.1.2 Ensure loopback traffic is configured - input | CIS Debian 9 Server L1 v1.0.1 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.1.3 Ensure ufw service is enabled - systemctl | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.1.4 Ensure ufw loopback traffic is configured - v6 | CIS Ubuntu Linux 16.04 LTS Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.1.6 Ensure ufw firewall rules exist for all open ports | CIS Ubuntu Linux 16.04 LTS Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.1.6 Ensure ufw firewall rules exist for all open ports | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.1.7 Ensure unnecessary services and ports are not accepted | CIS Fedora 19 Family Linux Server L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.1 Ensure IPv6 default deny firewall policy - Chain FORWARD | CIS Debian 9 Workstation L1 v1.0.1 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.2 Ensure firewalld is not installed or stopped and masked - is-enabled | CIS Fedora 19 Family Linux Server L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.3 Ensure iptables are flushed with nftables - v6 | CIS Ubuntu Linux 16.04 LTS Server 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 Workstation | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.5 Ensure nftables base chains exist - forward | CIS Ubuntu Linux 16.04 LTS Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.5 Ensure nftables base chains exist - input | CIS Ubuntu Linux 16.04 LTS Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.6 Ensure base chains exist - hook input | CIS Fedora 19 Family Linux Server L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.6 Ensure base chains exist - hook input | CIS Fedora 19 Family Linux Workstation L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.6 Ensure nftables loopback traffic is configured - lo | CIS Ubuntu Linux 16.04 LTS Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.6 Ensure nftables loopback traffic is configured - lo | 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 - 'iif 'lo' accept' | CIS Fedora 19 Family Linux Workstation L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.7 Ensure loopback traffic is configured - 'ip6 saddr' | CIS Fedora 19 Family Linux Server L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.7 Ensure nftables outbound and established connections are configured | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.8 Ensure outbound and established connections are configured | 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 forward | CIS Fedora 19 Family Linux Server 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 Server 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 Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.1.1 Ensure iptables packages are installed - iptables-persistent | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.1.2 Ensure nftables is not installed with iptables | CIS Ubuntu Linux 16.04 LTS Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.2 Ensure IPv6 outbound and established connections are configured | CIS SUSE Linux Enterprise 12 v3.2.1 L1 Server | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.2.1 Ensure default deny firewall policy - Chain OUTPUT | CIS Fedora 19 Family Linux Server L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.2.2 Ensure loopback traffic is configured - INPUT | CIS Fedora 19 Family Linux Workstation L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.2.6 Ensure iptables is enabled and running - is-enabled | CIS Fedora 19 Family Linux Workstation L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.3.1 Ensure IPv6 default deny firewall policy - Chain INPUT | CIS Fedora 19 Family Linux Server 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 Server L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.3.3 Ensure IPv6 outbound and established connections are configured | CIS Fedora 19 Family Linux Workstation L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.3.4 Ensure IPv6 firewall rules exist for all open ports | CIS Fedora 19 Family Linux Server L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.3.5 Ensure ip6tables rules are saved - FORWARD | CIS Fedora 19 Family Linux Server L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.3.5 Ensure ip6tables rules are saved - INPUT | CIS Fedora 19 Family Linux Server L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.2.1 Ensure IPv4 default deny firewall policy - FORWARD | CIS Oracle Linux 6 Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.2.1 Ensure IPv4 default deny firewall policy - FORWARD | CIS Red Hat 6 Server L1 v3.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.2.2 Ensure IPv4 loopback traffic is configured - INPUT | CIS Oracle Linux 6 Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.2.2 Ensure IPv4 loopback traffic is configured - INPUT | CIS Red Hat 6 Server L1 v3.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.2.2 Ensure IPv4 loopback traffic is configured - OUTPUT | CIS Red Hat 6 Server L1 v3.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.2.5 Ensure base chains exist - forward | CIS Debian Family Workstation L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.2.6 Ensure loopback traffic is configured - lo | CIS Debian Family Workstation L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.3.2 Ensure IPv6 loopback traffic is configured - OUTPUT | CIS Oracle Linux 6 Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.3.3 Ensure IPv6 outbound and established connections are configured | CIS Oracle Linux 6 Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.3.4 Ensure IPv6 firewall rules exist for all open ports - ss | CIS Red Hat 6 Workstation L1 v3.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 4.8 Enable IP6tables | CIS Red Hat Enterprise Linux 5 L1 v2.2.1 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
