nftables The next generation, iptables replacement firewalling infrastructure in the Linux kernel
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nftables (also known as nf_tables) is an open source command-line software that provides a next-gen firewalling infrastructure for Linux-based operating systems, implemented directly in the Linux kernel. nftables’ ultimate goal is to replace the iptables, ip6tables, arp_tables, and ebtables frameworks, by providing a brand-new packet filtering framework, a compatibility layer for iptables/ip6tables, and a new userspace utility. The software features support for dictionaries and sets of arbitrary types, meta data types, various protocols, connection tracking, logging, NAT, a format grammar, a netlink API, and much more. It is based on the Netfilter infrastructure.

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