Your statement doesn’t address the point you are responding to so it makes me think you completely missed the point you are replying to.

You are correct in theory. What you don’t seem to be taking into consideration are firewall vulnerabilities or other unknown things that could happen that make it different from a practical standpoint.

I started an ISP from the ground in 1996. I’ve seen a lot of weird stuff. You seem to just hand waive it away like firewalls are this perfect bastion of security.

Maybe you have more experience than I do?