How can I control a PC that is not connected to the Internet through a second one connected to a regular network?

Question

Computers

There are two PCs, one locked inside the company, you need to manage it from another PC. There are no admin rights. I can't install anything.

Answer 1

1. Set up a local network between two PCs
   
2. On a PC connected to the Internet, share a network connection for another (or just insert a USB LTE whistle into another PC)
   
3. On the second PC, install a VNC server / configure RDP
   
4. Forward a port from a second PC to a white IP on the Internet / router