Internal Program Version: nftables  1.1.1

nf_tables is a firewalling mechanism in the Linux kernel, running
independently of, and thus parallel to, ip_tables, ip6_tables,
arp_tables and ebtables. nftables is the corresponsing userspace
frontend.

nftables features support for sets and dictionaries of arbitrary
types, support for different protocols, meta data types, access to
connection tracking and NAT, logging, atomic incremental and full
ruleset updates.

http://netfilter.org/projects/nftables