NAME

       iptables-translate — translation tool to migrate from iptables to nftables

       ip6tables-translate — translation tool to migrate from ip6tables to nftables

       ebtables-translate — translation tool to migrate from ebtables to nftables

DESCRIPTION

       There  is  a  set of tools to help the system administrator translate a given ruleset from
       iptables(8), ip6tables(8) and ebtables(8) to nftables(8).

       The available commands are:

       • iptables-translate

       • iptables-restore-translate

       • ip6tables-translate

       • ip6tables-restore-translate

       • ebtables-translate

USAGE

       They take as input the original iptables(8)/ip6tables(8)/ebtables(8) syntax and output the
       native nftables(8) syntax.

       The  iptables-restore-translate  tool  reads a ruleset in the syntax produced by iptables-
       save(8). Likewise, the ip6tables-restore-translate tool reads one produced  by  ip6tables-
       save(8).  No ruleset modifications occur, these tools are text converters only.

       The  iptables-translate  reads  a  command  line  as if it was entered to iptables(8), and
       ip6tables-translate reads a command like as if it was entered to ip6tables(8).

EXAMPLES

       Basic operation examples.

       Single command translation:

       root@machine:~# iptables-translate -A INPUT -p tcp --dport 22 -m conntrack --ctstate NEW -j ACCEPT
       nft add rule ip filter INPUT tcp dport 22 ct state new counter accept

       root@machine:~# ip6tables-translate -A FORWARD -i eth0 -o eth3 -p udp -m multiport --dports 111,222 -j ACCEPT
       nft add rule ip6 filter FORWARD iifname eth0 oifname eth3 meta l4proto udp udp dport { 111,222} counter accept

       Whole ruleset translation:

       root@machine:~# iptables-save > save.txt
       root@machine:~# cat save.txt
       # Generated by iptables-save v1.6.0 on Sat Dec 24 14:26:40 2016
       *filter
       :INPUT ACCEPT [5166:1752111]
       :FORWARD ACCEPT [0:0]
       :OUTPUT ACCEPT [5058:628693]
       -A FORWARD -p tcp -m tcp --dport 22 -m conntrack --ctstate NEW -j ACCEPT
       COMMIT
       # Completed on Sat Dec 24 14:26:40 2016

       root@machine:~# iptables-restore-translate -f save.txt
       # Translated by iptables-restore-translate v1.6.0 on Sat Dec 24 14:26:59 2016
       add table ip filter
       add chain ip filter INPUT { type filter hook input priority 0; }
       add chain ip filter FORWARD { type filter hook forward priority 0; }
       add chain ip filter OUTPUT { type filter hook output priority 0; }
       add rule ip filter FORWARD tcp dport 22 ct state new counter accept

       root@machine:~# iptables-restore-translate -f save.txt > ruleset.nft
       root@machine:~# nft -f ruleset.nft
       root@machine:~# nft list ruleset
       table ip filter {
            chain INPUT {
                 type filter hook input priority 0; policy accept;
            }

            chain FORWARD {
                 type filter hook forward priority 0; policy accept;
                 tcp dport ssh ct state new counter packets 0 bytes 0 accept
            }

            chain OUTPUT {
                 type filter hook output priority 0; policy accept;
            }
       }

LIMITATIONS

       Some (few) extensions may be not supported (or fully-supported) for whatever  reason  (for
       example, they were considered obsolete, or we didn't have the time to work on them).

       There is no translation available for arptables(8).

       To get up-to-date information about this, please head to https://wiki.nftables.org/.

SEE ALSO

       nft(8), iptables(8)

AUTHORS

       The nftables framework is written by the Netfilter project (https://www.netfilter.org).

       This manual page was written by Arturo Borrero Gonzalez <arturo@netfilter.org>.

       This documentation is free/libre under the terms of the GPLv2+.

                                           May 14, 2019                     IPTABLES-TRANSLATE(8)