How to setup a Hyper-V correctly for VPN access

Hi Team,

First of all thanks for any help with this, we are new to this and trying to help a client.

The client wants to move from a Physical Server at there office to a Dedicated server running Hyper-V. The backups are set to make a Hyper-V server so it was easy to move the files up to the new Dedicated server. Once we did this we followed a guide to lock down the ports but now the box cant access the internet. We have tried various options and nothing works. What we need is the following please

1/ Correct way to setup security for the Windows Box under Hyper-V
2/Correct Security settings for Hyper-V Host
3/ How to setup a VPN from the client office to the Hyper-V Client

Any help would be great thanks