[NoMoreNicksLeft]

You don't know much about it. When you connect to a Plex server, you have to log into their backend, or it doesn't even know how to connect. It also does all the accounts/permissions stuff. An internet outtage is, unfortunately, a Plex outtage.

[bcraven]

https://support.plex.tv/articles/200890058-authentication-fo...

In rare cases, you may decide that you wish to allow very specific access from the local network without authentication. You might do this if using a third-party Plex app, which doesn’t support authentication, for instance (though all modern official and third-party apps should already support authentication).

To make an exception, look in your Plex Media Server’s advanced network settings, under Settings > Server > Network > List of IP addresses and networks that are allowed without auth.

Here, you can specify LAN addresses as either a specific IP or a IP/netmask (to specify a range). Separate multiple values by a comma and be sure not to include any whitespace (e.g. spaces).

[bigstrat2003]

That isn't true. There's a setting in the server for networks which are allowed to access without authentication.

[cyberax]

I have never set up a remote connection. My phone and laptop have a VPN connection back to my home network, and Plex just works. My TV also uses a local connection.

I believe that the regular "external" connection requires a STUN server, so it will fail without Internet.