Insecure accessibility to any user on LAN without any authentication

[dragonbytes 1]

Hi,

I'm an Emby Premiere customer and running server version 4.10.0.11 beta under linux (ubuntu-based distro). I noticed that when connecting from the LAN, you can just select any user and get right in without any passwords or authentication of any kind, INCLUDING admistrator accounts. Is this a bug or some kind of convenience "feature"? I know there used to be a setting where you could choose a PIN for LAN connections to make it easier, but it seems that option is nowhere to be found anymore. Anyone that could gain access to my LAN can now have complete control over my server which is not cool at all. Is there a way to restrict this? Thanks