tldr/pages/linux/arptables.md

arptables

Manage ARP filtering rules using the nftables backend. Part of the xtables-nft suite for ARP packet filtering. More information: https://manned.org/arptables.

• List all ARP rules in the filter table:

sudo arptables {{[-L|--list]}}

• Append a rule to drop ARP packets from a specific IP address:

sudo arptables {{[-A|--append]}} INPUT {{[-s|--source-ip]}} {{192.168.0.1}} {{[-j|--jump]}} DROP

• Delete a specific rule from the INPUT chain by its rule number:

sudo arptables {{[-D|--delete]}} INPUT {{rule_number}}

• Flush all rules in the filter table:

sudo arptables {{[-F|--flush]}}

• Set the default policy of the OUTPUT chain to ACCEPT:

sudo arptables {{[-P|--policy]}} OUTPUT ACCEPT

• Save the current ARP rules to a file:

sudo arptables-save > {{path/to/file}}