Is a device with standard firmware. I have upgraded the fw from TP-Link site.

@Joseph-TP Hi Joseph, thank for your reply but your idea isn't applicable because my router isn't Service Provider Customized. The URL...

I try to access to the VR1210v router thru OpenVPN connection but the "406 Not Acceptable" error appears on my browser. i.e. my PC is a remote client OpenVPN of VR1210v connected to the router via...