Can you set up Plex server entirely remotely on a NAS?

I think I replicated what you’re seeing.

admin@moesern:~$ channel 3: open failed: connect failed: Connection refused
channel 3: open failed: connect failed: Connection refused
channel 3: open failed: connect failed: Connection refused
channel 3: open failed: connect failed: Connection refused
channel 3: open failed: connect failed: Connection refused
channel 3: open failed: connect failed: Connection refused

  1. Is port 32400 TCP open in the firewall ?
  2. if so, go grab the plex logs