nftables

linux

Successor to iptables providing packet filtering and network address translation via the nf_tables kernel subsystem

Pronunciation

Correct

EN-EFF-tay-buls

/ˌɛnˈɛfˈteɪbəlz/

'nf' stands for Netfilter, spelled out as letters N-F, followed by 'tables'. The official project name is stylised as 'nftables' in lowercase.

Source: www.netfilter.org(official docs)