All my plex players say my linux server is unreachable - Local PMS server is reachable (Linux)

Server Version#: 1.41.5.9522
Plex Media Server Logs_2025-03-14_17-07-52.zip (788.9 KB)

Player Version#: Android 4.6 - TV (Samsung) 2.0
<If providing server logs please do NOT turn on verbose logging, only debug logging should be enabled>

I have reset everything and cannot find a ways to access my PMS. When I open a browser on my local (PMS Server) machine, it says the server is online and I can access everything. I don’t know what to do to trouble-shoot this.

Plex.tv sees that your server contacted it 7 minutes ago (as I post this).

You posted this 16 minutes ago

Did you delete & reclaim the server ?

If so, force-restart (hard terminate / reboot) the player instances

You might have to relink the players. (I cannot see that far into the device list)

I don’t know that changed but the ufw firewall started blocking local traffic from my PMS. I just wrote a rule excluding plexmedaserver from the firewall and things seem to be working.

Here is the rule:

[plexmediaserver]
title=Plex Media Server (Standard)
description=The Plex Media Server
ports=32400/tcp|3005/tcp|5353/udp|8324/tcp|32410:32414/udp

[plexmediaserver-dlna]
title=Plex Media Server (DLNA)
description=The Plex Media Server (additional DLNA capability only)
ports=1900/udp|32469/tcp

[plexmediaserver-all]
title=Plex Media Server (Standard + DLNA)
description=The Plex Media Server (with additional DLNA capability)
ports=32400/tcp|3005/tcp|5353/udp|8324/tcp|32410:32414/udp|1900/udp|32469/tcp

=====

The rule is stored at /etc/ufw/applications.d/plexmediaserver

=====

sudo ufw app update plexmediaserver
sudo ufw allow plexmediaserver-all

=====

I don’t know if something in the most recent server update impacted this.

Do you have a firewall in your modem/router ?

I have a good one in mine therefore none of my Linux hosts disable the firewall.

PS: Haven’t used it in ages but this is what I have

ports=3005/tcp|32400/tcp|32410:32414/tcp|8324/tcp|32469/tcp|5353/udp|8324/udp|1900/udp

I don’t allow access to my PMS outside of my network. Again, I don’t know why access to Plex quit working. By creating an exception firewall rule on my Linux server solved the issue. There was a recent PMS update that I installed, I don’t know if that was a factor for why the clients could no longer connect.

Anyway, thank you for your responses.

If the UFW rule creation solved the issue then it was UFW (a Ubuntu update) which caused it.

PMS is at the mercy of the host networking rules / configurations.

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