Why doesn't autoloading iptables ubuntu iptables-restore rules work?

Question

linux

After each restart of the system, network settings are reset,
I used the command ( iptables-save > /home/linux/Vlad/iptables3.backup )
and then wrote in ( interfaces ) ( iptables-restore < /home/linux/Vlad/iptables3.backup )
that I could do it wrong or what other options are there?

Answer 1

The parenthesis in the team with participation iptables-restoreis superfluous - just iptables-restore /home/linux/Vlad/iptables3.backuptry it.

Answer 2

after reboot, the settings also flew off

Answer 3

In /etc/network/if-pre-up.d/ , create a file with the code below, change ownership to root, and set the startup flag.

#!/bin/bash
/sbin/iptables-restore < /home/linux/Vlad/iptables3.backup

ps File iptables3.backup , it is better to throw in /etc and rights only for root