How to forward a VPN connection to a virtual machine?

Question

System administration

Friends, there is a host machine on Windows and a Centos 7 virtual machine deployed through VirtualBox.
I need the virtual machine to be able to access VPN resources. Connecting to VPN using OpenVPN.
Virtual machine network settings:

Answer 1

Raise a VPN connection in a virtual machine, for example. If it is possible to make a pair of keys for a virtual machine.
Make a virtual network, register routes in the virtual machine to the resources behind the VPN, make a masquerading for the virtual network on the host system. There are usually addresses 192.168.56.0/24 or whatever you configure in the "Host Network Manager".
You can generally raise a proxy on the host system, if you need to skip TCP.

Answer 2

like no special obstacles ... nat is enabled,
if the virtual machine is the calling part (calier), then it should work for nat.
NAT - fundamental? You can make a bridge = bridge - and then the dependence is generally removed, the
virtual machine will receive an address and a gate from the nearest DHCP, like an independent machine.
It remains to set up a client (or server, without Nata it will be easier) on a virtual machine.
We check the IP configuration, study the connection logs, try to scan the necessary ports, does the
firewall allow it?