Choose for the stable version and download it here.
Now the client side: for OS X we will use Tunnelblick, an open source graphic userinterface for OpenVPN on Mac. The VPN server configuration is now finished. This rule should read: forward port 1194 UDP to QNAP ip address port 1194 UDP. The next step is to configure a forwarding rule for your QNAP (on your internet modem/router), more specifically, to the IP address of the interface selected at the Network interface option. Now select privilege settings, and select OpenVPN for the user that is allowed to use VPN: readme.txt – Contains the instructions to configure the VPN client.openvpn.ovpn – OpenVPN configuration file.ca.crt – Certificate file needed for the OpenVPN client.
The certificate file is a zip file named qnap-ovpn.zip and contains three files: Apply the configuration and download the certificate file. The network interface is the NIC in your QNAP that will/can connect to the internet, note that this NIC shouldn’t be used by a virtual switch. The maximum number of VPN clients is up to you, I would advise to set the encryption to AES 256 bit. You can keep the server port (1194) as it is. OpenVPN will route the traffic from the OpenVPN segment to the connected LAN. You have to define the VPN client IP pool, note that this range is a different one then the one your using in your LAN. Select OpenVPN option, enable OpenVPN and create an initial configuration: With 4.3 the OpenVPN server is part of the QVPN service, so you need to open this app for the initial configuration. The second step is to configure the OpenVPN server on the QNAP. You can deselect all shared folder permissions and application privileges, this is not required for a user that’s using VPN (unless you also want to give this user access to other QNAP resources). The first step is to create a user on your QNAP that can use OpenVPN.
This post is based on QNAP firmware 4.3.3. With version 4.3.x QNAP some things changed in the interface, when compared to 4.2.x.
Today a post on how to configure OpenVPN on QNAP and how to connect MacOS to the OpenVPN server on your QNAP.