nft

Nft is a command line tool that is used for managing the netfilter subsystem in the Linux kernel. It allows users to create and manage rules for packet filtering and network address translation. Nft stands for "Netfilter tables," which are a replacement for the older iptables framework. This tool provides a more modern and efficient way to manage firewall rules and perform network traffic manipulation. Nft uses a custom scripting language called nftables, which is used to define rulesets and handle packet filtering. It supports various types of rules, including packet classification, stateful firewalling, and network address translation. Additionally, nft offers a rich set of functions and expressions, making it highly flexible and powerful for configuring network security and traffic control.