- Require authentication on cameras and media servers.
- Keep IP cameras and recorders off the Internet; use a VPN for remote viewing.
- Update device firmware.
Port 3334: Direct TV Webcasting
Port 3334 is assigned by IANA to directv-web (Direct TV Webcasting).
3334
How directv-web works
Media & streamingThe device streams video frames over port 3334, continuously, as they are captured.
- Transport
- TCP · UDP
- Exposure risk
- not rated depends on the program listening
- Encryption
- Unknownnot stated by the registry
- IANA status
- Assigned1 registered service
- Range
- Registered (1024-49151)
- Category
- Media & streaming
Is port 3334 dangerous?
We have no specific security note for port 3334. Its risk depends on the program actually listening on it. General advice for media & streaming services:
IANA registry entries for port 3334
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| directv-web | 3334 | TCP, UDP | Direct TV Webcasting | - | - |
// source: IANA service name and port number registry
Which program uses port 3334, and is it reachable?
Linux
sudo ss -ltnup 'sport = :3334' # process listening on 3334
sudo lsof -nP -i :3334macOS
sudo lsof -nP -i :3334
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3334 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 3334 netstat -ano | findstr :3334
From another machine
nmap -p 3334 -sV <host> sudo nmap -sU -p 3334 <host> nc -zv <host> 3334
Block it in the firewall
sudo ufw deny 3334/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 3334" -Direction Inbound -LocalPort 3334 -Protocol TCP -Action Block # Windows
What is port 3334 used for?
Port 3334 is assigned by IANA to directv-web (Direct TV Webcasting).
Is port 3334 TCP or UDP?
Port 3334 is registered for TCP and UDP.
Is it safe to open port 3334?
It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Require authentication on cameras and media servers.
How do I check if port 3334 is open?
On Linux run "ss -ltnup 'sport = :3334'", on macOS "lsof -nP -i :3334", and on Windows "netstat -ano | findstr :3334" to see the local process. From another machine, "nmap -p 3334 <host>" shows whether it is reachable.