How to implement a vpn connection to a virtual machine to access the balls?

Question

VPN

Good afternoon!
There is an ubuntu server running a QEMU virtual machine with Windows 8.1 on it. On Windows there is no Internet and there is a shared folder on the LAN. Access to it by login and password. On ubuntu, the Internet is coming through the adsl router.
Purpose: remote access to balls via the Internet.
What do you advise?

Answer 1

Raise a 6a ubuntu vpn server, set up routing from the vpn subnet to the virtual machine subnet and go to your balls.