What is the best remote control software?

Question

Remote access

1) The ability to simply view in hidden mode, there should not be any windows about granting access
2) Work both in the local network and via the Internet
3) File transfer
4) Free (for personal use, not an organization)

Answer 1

"Drank the fly, son..."

Answer 2

ssh

Answer 3

Ah ah ah. Your girlfriend should have freedom of choice. So you get nothing.