From here :
https://forums.plex.tv/discussion/167655/bt-hub-5-not-sharing-with-friends-solution
Log into your BT HUB – you can get the link from BT but its just your IP address, and your need you admin code of the back of router
Log in and go to advanced settings
Firewall
Port Forwarding – (done by default)
Manage games and applications tab
Add new games or applications
Type Plex into the name bar
click no on copy exsiting
Then add the below to the list making sure you have the right selection of TCP or UDP and put in the numbers below – for example put TCP and type 32400 in every box (4 boxes to fill) then click add
Repeat until all numbers are in – you don’t need them all but if unsure do them all
More information below this stuff – coz your not done yet!
The most important port to make sure your firewall allows is the main TCP port the Plex Media Server uses for communication:
- TCP: 32400 (for access to the Plex Media Server) [required]
The following ports are also used for different services:
- UDP: 1900 (for access to the Plex DLNA Server)
- TCP: 3005 (for controlling Plex Home Theater via Plex Companion)
- UDP: 5353 (for older Bonjour/Avahi network discovery)
- TCP: 8324 (for controlling Plex for Roku via Plex Companion)
- UDP: 32410, 32412, 32413, 32414 (for current GDM network discovery)
- TCP: 32469 (for access to the Plex DLNA Server)
Hit apply
then click the port forwarding link again
Go to the select game or application drop down menu and find Plex – this is what you just added
select your device, this is what you store your movies etc on
Then hit add
Then hit apply
Nearly done…. go to plex app and go to settings
Server
Remote access
Click the manual button and retry
Job done!!!
Enjoy sharing
tatvog 