Unreachable server - ISP blocking?

[db0ne]

This is due to a bad firmware update that AT&T forced on all their Arris BGW210 gateways since early August, there was never anything wrong on Plex’s end. Here are my fix instructions, hopefully they work for you too:

Plex server not available outside local network (ARRIS BGW210-700 firmware issue)

I think I found a fix for this. I spent hours and hours researching this issue today because my Plex Media Server hasn’t been reachable to anyone outside my network for the past week, and traced it to a bad firmware update that AT&T has been pushing our to their Arris BGW210 customers over the past month: I had already wasted well over an hour on the phone with AT&T begging them to downgrade my firmware back to the previous functional version instead of replacing my entire modem, and then rea…