Cannot connect to local Plex Media Server - MacOS Firewall Config change required

Server Version#: 1.40.1.8227
Player Version#: LG TV

I am running Plex Media Server on my MacOS Macbook Pro.
MacOS: 14.3.1 (23D60)
I am running with Avast Premium Security
I have configured the System Settings → Network → Firewall (on) → Options → Plex Media Server (Allow incoming connections)

And yet - when I try to connect to the Plex Media Server running on my Macbook Pro - from my LG Tv - I get the red triangle - server unavailable.

To get around this I have to manually edit files on my Macbook to expressly allow the Plex Server Port to be accessed. If there is any system update, the file gets overwritten and I have to do it again.

What do I need to do so that Plex is persisently available to other devices within my home network?

Any help greatly appreciated. Editing firewall files from Terminal not something I want to do regularly!

Instructions for those who are interested on how to edit the firewall config - NOTE This is for advanced users only. Take care for making any changes here.

  1. Edit the file /etc/pf.conf

    sudo nano /etc/pf.conf

  2. Add the following line to the end of the file:

    pass in inet proto tcp from any to any port 32400 no state
    
  3. Reload and restart the firewall

    sudo pfctl -f /etc/pf.conf
    sudo pfctl -E

After completing these steps you should be able to access your Plex Media Server from devices on your network.

General firewall config changes on this process can be found here:

https://www.lifewire.com/open-a-port-on-a-routers-or-computers-firewall-5072435#:~:text=How%20to%20Make%20a%20Port%20Open%20on%20a%20Mac

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