Setup VPN network and configure for virtualization servers

The job consist of: 1- Setup VPN server (OpenVPN or propose a better solution) into KVM VPS (Debian 9 or CentOS 7) 2- Configure Centos 6 OpenVZ hypervisor to have TAP interface connected to the VPN server 3- Create a subnet of VMs ([login to view URL]) and route all its traffic via VPN (incoming and outcoming) 4- Setup NAT port redirection for the VM to reach its services (SSH, FTP, HTTP) from the Internet Notes: 1- The hypervisor contain already another subnet of VMs ([login to view URL]) which need to work together with. 2- NAT port redirection need to be done via IPTables as it will be handled next time by automated script. Available budget very small. Need to be done ASAP. You will get TeamViewer based access to do all stuffs.