Port Reference

Port Reference

Ports used by Plex Media Server and common companion applications.

Plex Media Server

Port	Protocol	Purpose
32400	TCP	Main Plex web interface and API
32469	TCP	DLNA server
1900	UDP	DLNA discovery
32410	UDP	GDM network discovery
32412	UDP	GDM network discovery
32413	UDP	GDM network discovery
32414	UDP	GDM network discovery
8324	TCP	Roku companion

Required for Remote Access

Port 32400 TCP must be forwarded for remote streaming.

Optional Ports

• 1900 UDP: DLNA discovery (local network only)
• 32410-32414 UDP: GDM discovery (local network only)

Companion Applications

Application	Default Port	Protocol
Tautulli	8181	TCP
Overseerr	5055	TCP
Sonarr	8989	TCP
Radarr	7878	TCP
Lidarr	8686	TCP
Prowlarr	9696	TCP
qBittorrent	8080	TCP
SABnzbd	8080	TCP
Jackett	9117	TCP

Firewall Rules

Linux (UFW)

# Essential
sudo ufw allow 32400/tcp

# Optional (local network)
sudo ufw allow 1900/udp
sudo ufw allow 32410:32414/udp

Windows PowerShell

# Essential
New-NetFirewallRule -DisplayName "Plex" -Direction Inbound -Protocol TCP -LocalPort 32400 -Action Allow

# Optional
New-NetFirewallRule -DisplayName "Plex DLNA" -Direction Inbound -Protocol UDP -LocalPort 1900 -Action Allow
New-NetFirewallRule -DisplayName "Plex GDM" -Direction Inbound -Protocol UDP -LocalPort 32410-32414 -Action Allow

Docker Port Mapping

services:
  plex:
    ports:
      - "32400:32400/tcp"
      - "32469:32469/tcp"   # Optional: DLNA
      - "1900:1900/udp"     # Optional: DLNA discovery
      - "32410:32410/udp"   # Optional: GDM
      - "32412:32412/udp"   # Optional: GDM
      - "32413:32413/udp"   # Optional: GDM
      - "32414:32414/udp"   # Optional: GDM

Or use network_mode: host for simplicity.

Troubleshooting

Check Port Status

# Linux
ss -tlnp | grep 32400

# Windows
netstat -an | findstr 32400

Test External Access

# From external network
nc -zv YOUR_PUBLIC_IP 32400

Next Steps

• Glossary
• FAQ