大きいＢＯＹ

Good question. I will attempt to clarify:

OP is saying that individual should run firewalls on their machines, that block port activity by default, and only allow traffic upon an approved request by the administrator account.

Look up “shellcheck”, find a plugin for your editor. It should help a lot.

I have personally seen the guitarist knock a racist out with his guitar. So that’s something.