Well me as an atheist understand it the other way around. I saw a documentary where they explained how those plagues actually could have occurred, and why they targeted specifically Egyptians.
And then people went on and blamed god for it of course.
Meaning your server is basically a vpn tunnel server and you can connect from the Internet to it. Once you are in the encrypted vpn connection you have access to the local network.
If you have dynamic ip you need dns though. But no one can connect just because they know the ip)/dns
Well F***