| 3.1.1 Disable IPv6 | CIS Fedora 19 Family Linux Server L2 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.1.1 Disable IPv6 - sysctl.conf default | CIS Debian Family Server L2 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.3.3 Ensure /etc/hosts.deny is configured | CIS Aliyun Linux 2 L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.1.1 Ensure default deny firewall policy - Chain INPUT | CIS Aliyun Linux 2 L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.1.1 Ensure ufw is installed | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.1.1 Ensure ufw is installed | CIS Ubuntu Linux 16.04 LTS Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.1.2 Ensure iptables-persistent is not installed with ufw | CIS Ubuntu Linux 16.04 LTS Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.1.2 Ensure loopback traffic is configured - input | CIS Aliyun Linux 2 L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.1.3 Ensure outbound and established connections are configured | CIS Aliyun Linux 2 L1 v1.0.0 | 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 - v4 | 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 - v4 | CIS Ubuntu Linux 16.04 LTS Server 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 |
| 3.5.1.5 Ensure ufw outbound connections are configured | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.1.7 Ensure ufw default deny firewall policy | CIS Ubuntu Linux 16.04 LTS Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.1 Ensure IPv6 default deny firewall policy - Chain FORWARD | CIS Aliyun Linux 2 L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.1 Ensure IPv6 default deny firewall policy - Chain INPUT | CIS Aliyun Linux 2 L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.1 Ensure nftables is installed | CIS Ubuntu Linux 16.04 LTS Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.2 Ensure IPv6 loopback traffic is configured | CIS Aliyun Linux 2 L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.2 Ensure ufw is uninstalled or disabled with nftables | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | 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 a nftables table exists | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | 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 |
| 3.5.2.5 Ensure nftables base chains exist - forward | CIS Ubuntu Linux 16.04 LTS Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.6 Ensure nftables loopback traffic is configured - lo | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.6 Ensure nftables loopback traffic is configured - v4 | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.6 Ensure nftables loopback traffic is configured - v4 | CIS Ubuntu Linux 16.04 LTS Server L1 v2.0.0 | 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 nftables default deny firewall policy - forward | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.8 Ensure nftables default deny firewall policy - forward | CIS Ubuntu Linux 16.04 LTS Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.8 Ensure nftables default deny firewall policy - output | CIS Ubuntu Linux 16.04 LTS Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.9 Ensure nftables service is enabled | CIS Ubuntu Linux 16.04 LTS Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.10 Ensure nftables rules are permanent | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | 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 |
| 3.5.3.1.3 Ensure ufw is uninstalled or disabled with iptables | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.2.1 Ensure iptables default deny firewall policy - 'Chain INPUT' | CIS Ubuntu Linux 16.04 LTS Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.2.1 Ensure iptables default deny firewall policy - 'Chain OUTPUT' | CIS Ubuntu Linux 16.04 LTS Server 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 Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.2.3 Ensure iptables outbound and established connections are configured | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.3.1 Ensure ip6tables default deny firewall policy - 'Chain FORWARD' | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | 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 Workstation 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 OUTPUT' | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.3.1 Ensure ip6tables default deny firewall policy - 'Chain OUTPUT' | CIS Ubuntu Linux 16.04 LTS Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.3.3.2 Ensure ip6tables loopback traffic is configured | CIS Ubuntu Linux 16.04 LTS Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.2.2 Ensure IPv4 loopback traffic is configured - OUTPUT | CIS CentOS 6 Server L1 v3.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.3.2 Ensure IPv6 loopback traffic is configured - INPUT | CIS CentOS 6 Server L1 v3.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.3.4 Ensure IPv6 firewall rules exist for all open ports - iptables | CIS CentOS 6 Server L1 v3.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
