| 3.1.2 Ensure packet redirect sending is disabled - 'net.ipv4.conf.all.send_redirects' (sysctl.conf/sysctl.d) | CIS Ubuntu Linux 14.04 LTS Workstation L1 v2.1.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.2.1 Ensure source routed packets are not accepted - 'net.ipv4.conf.all.accept_source_route' (sysctl.conf/sysctl.d) | CIS Ubuntu Linux 14.04 LTS Workstation L1 v2.1.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.2.1 Ensure source routed packets are not accepted - 'net.ipv4.conf.default.accept_source_route' (sysctl.conf/sysctl.d) | CIS Ubuntu Linux 14.04 LTS Workstation L1 v2.1.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.2.2 Ensure ICMP redirects are not accepted - 'net.ipv4.conf.all.accept_redirects' (sysctl.conf/sysctl.d) | CIS Ubuntu Linux 14.04 LTS Workstation L1 v2.1.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.2.2 Ensure ICMP redirects are not accepted - 'net.ipv4.conf.default.accept_redirects' (sysctl.conf/sysctl.d) | CIS Ubuntu Linux 14.04 LTS Workstation L1 v2.1.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.2.3 Ensure secure ICMP redirects are not accepted - 'net.ipv4.conf.all.secure_redirects' (sysctl.conf/sysctl.d) | CIS Ubuntu Linux 14.04 LTS Workstation L1 v2.1.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.2.3 Ensure secure ICMP redirects are not accepted - 'sysctl net.ipv4.conf.all.secure_redirects' | CIS Ubuntu Linux 14.04 LTS Workstation L1 v2.1.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.2.5 Ensure broadcast ICMP requests are ignored (sysctl exec) | CIS Ubuntu Linux 14.04 LTS Workstation L1 v2.1.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.2.7 Ensure Reverse Path Filtering is enabled - 'sysctl net.ipv4.conf.all.rp_filter' | CIS Ubuntu Linux 14.04 LTS Workstation L1 v2.1.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.3.1 Ensure IPv6 router advertisements are not accepted - 'net.ipv6.conf.all.accept_ra' (sysctl.conf/sysctl.d) | CIS Ubuntu Linux 14.04 LTS Server L1 v2.1.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.3.2 Ensure IPv6 redirects are not accepted - 'net.ipv6.conf.all.accept_redirects' (sysctl.conf/sysctl.d) | CIS Ubuntu Linux 14.04 LTS Server L1 v2.1.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.4.1 Ensure TCP Wrappers is installed | CIS Ubuntu Linux 14.04 LTS Server L1 v2.1.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.4.2.3 Ensure loopback traffic is configured - v4 | CIS Ubuntu Linux 18.04 LXD Container L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.4.2.4 Ensure outbound connections are configured | CIS Ubuntu Linux 18.04 LXD Container L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.4.3.1 Ensure iptables are flushed - v6 | 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 - forward | CIS Ubuntu Linux 18.04 LXD Container L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.4.4.3.1 Ensure IPv6 default deny firewall policy - 'Chain FORWARD' | CIS Ubuntu Linux 18.04 LXD Container L1 v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.4.4.3.1 Ensure IPv6 default deny firewall policy - 'Chain OUTPUT' | CIS Ubuntu Linux 18.04 LXD Container 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 |
| 3.5.1.2 Ensure iptables-persistent is not installed with ufw | CIS Ubuntu Linux 16.04 LTS Server L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.1.3 Ensure ufw service is enabled - ufw | 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 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 Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.1 Ensure nftables is installed | CIS Ubuntu Linux 16.04 LTS Workstation L1 v2.0.0 | 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 Workstation L1 v2.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.5.2.5 Ensure nftables base chains exist - output | 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 - v6 | CIS Ubuntu Linux 16.04 LTS Workstation 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 Server 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 - input | 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 |
| 3.5.2.10 Ensure nftables rules are permanent | 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 Server 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 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 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 |
| 3.5.3.3.2 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 Ensure default deny firewall policy - 'Chain INPUT' | CIS Ubuntu Linux 14.04 LTS Server L1 v2.1.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.2 Ensure default deny firewall policy - 'Chain OUTPUT' | CIS Ubuntu Linux 14.04 LTS Workstation L1 v2.1.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.2.3 Ensure loopback traffic is configured - v4 | CIS Ubuntu Linux 18.04 LXD Host L1 Server v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.2.3 Ensure loopback traffic is configured - v4 | CIS Ubuntu Linux 18.04 LXD Host L1 Workstation v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.2.3 Ensure loopback traffic is configured - v6 | CIS Ubuntu Linux 18.04 LXD Host L1 Server v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.3.1 Ensure iptables are flushed - v6 | CIS Ubuntu Linux 18.04 LXD Host L1 Server v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.3.3 Ensure base chains exist - output | CIS Ubuntu Linux 18.04 LXD Host L1 Workstation v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.3.4 Ensure loopback traffic is configured - v6 | CIS Ubuntu Linux 18.04 LXD Host L1 Workstation v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.3.6 Ensure default deny firewall policy - output | CIS Ubuntu Linux 18.04 LXD Host L1 Server v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.3.7 Ensure nftables service is enabled | CIS Ubuntu Linux 18.04 LXD Host L1 Workstation v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
| 3.6.4.2.1 Ensure IPv6 default deny firewall policy - 'Chain FORWARD' | CIS Ubuntu Linux 18.04 LXD Host L1 Server v1.0.0 | Unix | SYSTEM AND COMMUNICATIONS PROTECTION |
