Recently I bought Zyxel NAS520 and now I am trying to get access to it from The Internet. I "opened" ports in the router so it should by OK. But now I have problems with IP address of UPnP Router and I am not able to connect NAS from The Internet. Router was found but IP address is 0.0.0.0.
Can somebody help me with it?
You should not "open ports" in router, but enable UPNP service in router, so NAS could request and router could serve. And configure it properly...
with something like this: