4.4 Implement and Manage a Firewall on Servers 4.5 Implement and Manage a Firewall on End-User Devices Automated Configure nftables Host Based Firewall IG1 IG2 IG3 Level 1 M1031 M1037 Server T1562 T1562.004 TA0011 Workstation 4.3.1 Ensure nftables is installed Audit# Run the following command to verify that nftables is installed: # dpkg-query -s nftables &>/dev/null && echo "nftables is installed" nftables is installed Remediation# Run the following command to install nftables: # apt install nftables