I have been trying to set up remote access from my Synology 920+ NAS for the past year now and I got it to connect to the NAS but via a relay, not directly. I enabled UPnP on my router and the router’s config page showed local and public NAS address, still the Plex page says “Not available outside your network”. So I tried Manually specify public port and enable Port Forwarding in router setting instead. Still Plex page say “Not available outside your network”. Did I missed something? What else must I try?
This is the one I must ask from the ISP right?
Because if so then I believe my ISP has additional charge for them. Does it have to be static IPv4 or Dynamic IPv4 is also fine? And can I use IPv6 instead?