Some first help: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/configuring_and_managing_networking/getting-started-with-nftables_configuring-and-managing-networking#ref_comparison-of-common-iptables-and-nftables-commands_assembly_migrating-from-iptables-to-nftables https://wiki.archlinux.org/title/nftables