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5) Generate the OpenVPN config file
OpenVPN clients won't do anything without a config file. You can find sample files in the "[program files path]\OpenVPN\sample-config folder on the system you installed the client on, where [program files path] is the path to the Program Files or Program Files (x86) folders for 64 bit and 32 bit apps, respectively.

The sample client.opvn and sample.ovpn files are well commented and useful for advanced users. But it's much easier to click the Export button on the VPN Server page to generate and save a config that should get you up and running quickly.

Changing the selector on this page to Advanced Settings exposes the detailed settings used to configure the server and generate the client .opvn config file.

VPN Server Advanced Settings - Basic config

VPN Server Advanced Settings - Basic config

All the defaults work and will enable you to reach the router's shared storage and shares on devices connected to the router LAN. They will not, however, allow network browsing from the remote client. So you'll have to use \\ipaddress_of _device to reach shares and set up mapped drives for easy access.

VPN Server Advanced Settings - Basic config

VPN Server Advanced Settings - Basic config

If you simply must have network browsing, switching to TAP interface type will do it. But note this is a bridged connection and could cause problems.

Pay attention to the warning shown below that may appear on the VPN Server page. Most people will need to use a dynamic DNS service to reach their router due to the changing IP addresses issued by most ISPs. If you are going to use DDNS, set it up before you export the OpenVPN config file. Otherwise, the router's WAN IP address will be used. In my case, the WAN IP was fine because I was testing on a private LAN.

VPN Server Advanced Settings - Basic config

VPN Server Advanced Settings - Basic config

If you make any changes to these settings, you need to Apply them first, then Export a new config file.

6) Install the config file
Find the client.opvn file generated by clicking the Export button in Step 5 and copy / move it to the "[program files path]\OpenVPN\config folder, where [program file path] is the path to the Program Files or Program Files (x86) folders for 64 bit and 32 bit apps, respectively. If your client needs to connect to more than one VPN server, you'll need to generate a config file for each one and give them different names.

7) Start the OpenVPN client
Find the OpenVPN client shortcut created by the installer. Right click on it and select Run as administrator. At this point, this How to connect to a VPN Server with the Desktop Client FAQ screwed me up for awhile. I kept expecting to see the window below shown in the FAQ.

OpenVPN client window you won't see

OpenVPN client window you won't see

The ASUS FAQ provides a more accurate description of what to expect. The only thing you should see is the OpenVPN client icon in the System Notification Area (tray).

OpenVPN client running

OpenVPN client running

8) Connect
Right-clicking on the OpenVPN icon pops up the config(s), each of which expands into a submenu shown below. Select Connect.

OpenVPN client config selected

OpenVPN client config selected

You'll be prompted for the username and password you set up in the router.

OpenVPN client - user authentication

OpenVPN client - user authentication

After you enter the credentials, the connection will complete...

OpenVPN client - connecting

OpenVPN client - connecting

...and when it's done you'll see a confirmation.

OpenVPN client - connected

OpenVPN client - connected

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