iptables rules are not persistent

[o-l-a-v]

Rules generated by this script are not persistent. Script and README.md says nothing about this.

Either mention it in the README.md, and point to options for persistence. Like iptables-persistent.
Or handle it in the script.

I managed to make it persistent like so:

Make iptables persistent

Export current IP tables to a file

sudo iptables-save > ~/rules.v4

Copy file to the location iptables-persistent will use on reboot

sudo /bin/cp -rf ~/rules.v4 /etc/iptables/rules.v4

[LucianFrango]

With Ubuntu 22.04 LTS, to get this to work, I had to:

Install IP tables
sudo apt-get install iptables-persistent

Save IP tables
sudo iptables-save | sudo tee /etc/iptables/rules.v4

Reboot and test
sudo reboot