Hello, the question is about the security of the plex server. If I set the “connection security” parameter to “required” in the network configuration, is it possible that all communication with the server is encrypted (including content stream)? I am asking because now my friends connect to my server additionally via VPN tunnels and I would like to give up this by replacing, for example, an ordinary firewall that determines which IP will be accessed. But will such a transmission be completely encrypted ?
If you have HTTPS set to required then EVERY connection to/from a player is HTTPS.
All communications between PMS and plex.tv are HTTPS regardless.
You can require HTTPS but, in Network settings, override that for those addresses (such as your LAN) which you know are physically secure.
(Settings - Server - Network - Show Advanced)
How does that work?
If Secure connections is set to Required, I think it affects all connections. Hosts in LAN Networks or ... allowed without auth don’t seem to bypass this.
I thought it did for only the LAN segment. I know it does not impact anything on other subnets / WAN.
you might be right though. Transport vs Authentication are probably still separate at that level.
Ahh! OK. I thought maybe I was missing another setting. 
I just tested and confirmed that Secure connections appears to affect all connections regardless of those other options.
But that would be a nice feature, especially for old/slow/outdated local devices. I know some people use a reverse proxy to force SSL for external connections only.
We have enough problems with folks not understanding how networking and socketry work 
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