Hello gotrain!
I currently manage various types of VPN and firewalls for my company. I have set up many active/passive firewall pairs with VPN support. These VPNs range from site-site IPSEC to Cisco SSL AnyConnect VPN client. I configured all aspects of these VPNs including the crypto settings, authentication, and access lists.
I'm sure I can make this project successful for you. I would just need to know more details about your setup. What are the details of the VPN that was previously being used? Was it a VPN client? If so,what company makes the client? Do you have any of the other details like VPN hostname? If you can't provide any of this, we may just need to look through the log files on the virtual and/or physical machine to determine the best course of action.
Hopefully you pick my bid so we can get this working for you!
Thanks,
Mike