The Plex UI/UX for the List of IP addresses and networks that are allowed without auth setting is poor.
No matter what you put in that field, the UI reports Your changes have been saved.
That’s true if it’s good, bad, or the literal word “abracadabra”.
It’s also very serious about being comma separated - it’s even allergic to whitespace.
This works: 192.168.0.0/16,10.0.0.0/8
But this (with a space) generates an error in the logs: 10.0.0.0/8, 192.168.0.0/16
Jul 27, 2020 12:01:04.570 [0x812b73b00] ERROR - Error parsing allowedNetworks ’ 192.168.0.016’: Invalid argument
And because of the prohibition on using ranges/CIDR notation for public addresses, this generates an error too: 198.51.100.0/24
Jul 27, 2020 12:09:40.646 [0x814e6b800] ERROR - Illegal whitelist covers multiple WAN IPs
But in all cases, the UI reports Your changes have been saved.
I don’t need assistance, just raising this as a minor UI/UX bug.