I want to set myself up the rules for firewall in iptables. But several queries have delivered different file-locations for iptables-rules.
One location is in /usr/local/bin and there is to create file with name fwall-rules as script ?! - But this looks antique ...
Other location is to create file apparently in /etc with name of script iptables.rules ?! (as explained in: https://help.ubuntu.com/community/IptablesHowTo)
Where is today fwall-rules to be edited in 18.04 for iptables ?
Are the fwall-rules then included in iptables automatically - or do I need to create a link for this in terminal for Ubuntu ?
When I write as command:
sudo ip6tables -I INPUT -s fe80::b131:5a4d:9ebf:4c36 -j DROP
Where is this then saved ?