Have the same problem with my TeraStation 8 drive DS5008. I use my own DNS and forwarding port and works fine if HTPS is disabled. However, when I enable HTTPS and load correct certificate and Key from digicert the connection does not go through at all and interface /ui is not appearing. I wonder whether Buffalo has restricted somehow (knowingly or not) webaccess to buffalonas. On the other hand, I have requested support from Buffalo Tech Support and was negatively surprised with their lack of knowleadge of computing ports. I am publishing this to see whether there is somebody out there that fixed webaccess with encryption. Thank you