(Opening this as separate issue, since I have no more activity on the original topic where it was also mentioned.)
Problem:
As I detaily described here, I have constant problems with remote access to the plex media server from my devices. If accessed from LAN, there are no issues however if accessed from WAN, server keeps disconnecting. Have to keep restarting the client until server will show up - same for desktop or phone. Sometimes playback works but when I try to fast forward movie it disconnects from the server and have to restart client again - very annoying!
It is dockerized setup on the host network:
version: '3.7'
services:
plex:
image: plexinc/pms-docker:plexpass
container_name: plex.529
restart: always
network_mode: host
volumes:
- $PWD/plex/config:/config
- $PWD/plex/transcode:/transcode
- /lvm/raid/private/media:/plex/media
- /lvm/raid/private/data:/plex/data
environment:
- TZ=Europe/Prague
- PLEX_UID=1000
- PLEX_GUID=994
- ADVERTISE_IP=http://192.168.255.11:32400/
- ALLOWED_NETWORKS=192.168.255.0/24,10.8.0.0/24
labels:
- com.ouroboros.enable=true
- traefik.enable=true
- traefik.port=32400
- traefik.frontend.entryPoints=https
- traefik.frontend.rule=Host:plex.example.com
- traefik.backend=plex.529
- traefik.frontend.headers.forceSTSHeader=true
- traefik.frontend.headers.STSSeconds=315360000
- traefik.frontend.headers.STSIncludeSubdomains=true
- traefik.frontend.headers.STSPreload=true
As i mention in other topic, this wasn’t happening before. I even switched back to my old router and exactly same behavior! I am willing to troubleshoot with someone.
How to replicate:
Every time I did a configuration change on the network I restarted the docker container for plex service, then tried to re-enable remote access again. And the results is, that for like 2-3 seconds it blinks green " Fully accessible outside your network"
but right after that it goes again:
I am really clueless now and desperate to fix it.
Server version:
Version 1.15.1.710
Logs:
Plex Media Server Logs_2019-03-04_15-08-24.zip (4.5 MB)
Any input will be appreciated. Thanks.

