Like most things there is a book that looks into this. Take a gander at the Wikipedia if your interested (the author argued that there are 11 ‘nations’ in the US). https://en.m.wikipedia.org/wiki/American_Nations

deleted by creator

The complexity of iptables should not be understated. IMO It should be treated as a firewall if last resort - because there is a very high chance the next person to maintain the system after you will not understand all of your implementation

A short time ago in a server near to your home…

Lemmy Wars

Some background. Some more background.