Tables in nftables hold chains. Each table only has one address family and only applies
to packets of this family. Tables can have one of six families.
Red Hat Enterprise Linux 8 uses firewalld for firewall management. When nftables is
the firewall backend used by firewalld, an nftables table used by firewalld exists, run the following
command:
$ sudo nft list tables
table
This table is automatically created by firewalld when it is started.