nft

command-line interface for nftables packet filtering

TLDR

List current ruleset

$ sudo nft list ruleset

Add a table

$ sudo nft add table inet [filter]

Add a chain with a hook

$ sudo nft add chain inet [filter] [input] \{ type filter hook input priority 0 \; policy accept \; \}

Add a rule to accept specific ports

$ sudo nft add rule inet [filter] [input] tcp dport \{ ssh, http, https \} accept

Delete a rule by handle

$ sudo nft delete rule inet [filter] [input] handle [3]

Flush all rules

$ sudo nft flush ruleset

Save ruleset to file

$ sudo nft list ruleset > /etc/nftables.conf

nft is the command-line interface for nftables, the modern Linux kernel packet filtering framework that replaces iptables, ip6tables, arptables, and ebtables with a unified syntax and improved performance.nftables uses a hierarchy of tables, chains, and rules. Address families include inet (IPv4+IPv6), ip (IPv4 only), ip6 (IPv6 only), bridge, arp, and netdev. Rules can be loaded from files using `nft -f /etc/nftables.conf`.

PARAMETERS

list ruleset

Display the current complete ruleset

add table family name

Create a new table

add chain family table chain specification

Create a new chain

add rule family table chain statement

Add a rule to a chain

delete rule family table chain handle n

Delete a rule by its handle

flush ruleset

Remove all rules and tables

--handle

Show rule handles for deletion

--numeric

Show numeric output (no name resolution)

INSTALL

sudo apt install nftables

sudo dnf install nftables

sudo pacman -S nftables

sudo apk add nftables

sudo zypper install nftables

brew install nftables

nix profile install nixpkgs#nftables

CAVEATS

Nftables syntax differs significantly from iptables. Tables must exist before chains, chains before rules. Changes are immediate but not persistent by default - save to /etc/nftables.conf for persistence.

HISTORY

nft is part of the nftables project, the successor to iptables, providing unified packet classification framework in the Linux kernel.

nft

command-line interface for nftables packet filtering

TLDR

SYNOPSIS

DESCRIPTION

PARAMETERS

INSTALL

CAVEATS

HISTORY

SEE ALSO