- 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 3834: Spectar Data Stream Service
Port 3834 is assigned by IANA to spectardata (Spectar Data Stream Service).
3834
How spectardata works
Media & streamingThe device streams video frames over port 3834, 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 3834 dangerous?
We have no specific security note for port 3834. Its risk depends on the program actually listening on it. General advice for media & streaming services:
IANA registry entries for port 3834
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| spectardata | 3834 | TCP, UDP | Spectar Data Stream Service | - | - |
// source: IANA service name and port number registry
Which program uses port 3834, and is it reachable?
Linux
sudo ss -ltnup 'sport = :3834' # process listening on 3834
sudo lsof -nP -i :3834macOS
sudo lsof -nP -i :3834
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3834 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 3834 netstat -ano | findstr :3834
From another machine
nmap -p 3834 -sV <host> sudo nmap -sU -p 3834 <host> nc -zv <host> 3834
Block it in the firewall
sudo ufw deny 3834/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 3834" -Direction Inbound -LocalPort 3834 -Protocol TCP -Action Block # Windows
What is port 3834 used for?
Port 3834 is assigned by IANA to spectardata (Spectar Data Stream Service).
Is port 3834 TCP or UDP?
Port 3834 is registered for TCP and UDP.
Is it safe to open port 3834?
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 3834 is open?
On Linux run "ss -ltnup 'sport = :3834'", on macOS "lsof -nP -i :3834", and on Windows "netstat -ano | findstr :3834" to see the local process. From another machine, "nmap -p 3834 <host>" shows whether it is reachable.