arptables-nft-restore - Linux

Overview

arptables-nft-restore is designed to restore pre-existing iptables rules directly into a nftables configuration. It allows administrators to convert old iptables rules into the more modern nftables framework, providing a seamless transition to the enhanced capabilities offered by nftables.

Syntax

arptables-nft-restore [options] <file>

Options/Flags

  • –help: Display help and exit.
  • –version: Show version information and exit.
  • –clear-counters: Reset all counters in the restored rules.
  • –clear-arp-tables: Flush all existing ARP tables.
  • –no-arp-tables: Omit ARP table restore operations.
  • –no-netfilter-tables: Omit netfilter table restore operations.
  • –no-ip: Omit IP rule restore operations.

Examples

Convert iptables rules to nftables:

arptables-nft-restore iptables_rules.txt

Restore a specific set of tables:

arptables-nft-restore iptables_rules.txt --clear-netfilter-tables

Reset counters and flush ARP tables:

arptables-nft-restore --clear-counters --clear-arp-tables iptables_rules.txt

Common Issues

  • Invalid input file: Ensure that the provided file contains valid iptables rules.
  • Unknown table: Verify that the specified table exists in the nftables configuration.
  • Conflicting rules: Identify and resolve any overlaps or conflicts between the restored rules and existing nftables rules.

Integration

iptables-nft-restore works in conjunction with other nftables tools, such as nft and nftables-add-rule. It enables administrators to integrate iptables rules into complex nftables configurations, leveraging the flexibility and features of nftables.

Related Commands

  • iptables: Manage IPv4 and IPv6 packet filtering rules.
  • nft: Configure and manage nftables rules.
  • nftables-add-rule: Add a single nftables rule to the specified table.