I found a great deal on an Asus RT-AC66U router. I realize this is older ASUS technology but is there any reason I could not use OpenVPN with this router to provide remote access to my Hikvision NVR? I have very simple needs for wireless capabilities at my house, and I'm not even sure I can use a VPN connection with my VOIP phone service. I mainly just want to use this router to learn VPN systems and to have as a backup to my current TP-Link router.