To create your own set of Netfilters you can save your rules in:

/storage/.config/iptables/rules.v4 for ipv4
/storage/.config/iptables/rules.v6 for ipv6

To modify tables, edit with nano then save with:

iptables-save >/storage/.config/iptables/rules.v4
ip6tables-save >/storage/.config/iptables/rules.v6

To disable iptables use the following command:

systemctl mask iptables

To enable iptables again:

systemctl unmask iptables
