CyberHunter
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// Media & streaming

Port 1347: multi media conferencing

Port 1347 is assigned by IANA to bbn-mmc (multi media conferencing).

1347

How bbn-mmc works

Media & streaming
playercamerabbn-mmc playercamerabbn-mmc

The device streams video frames over port 1347, 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)
01 Security

Is port 1347 dangerous?

We have no specific security note for port 1347. Its risk depends on the program actually listening on it. General advice for media & streaming services:

  • Require authentication on cameras and media servers.
  • Keep IP cameras and recorders off the Internet; use a VPN for remote viewing.
  • Update device firmware.
02 Registry

IANA registry entries for port 1347

ServicePortTransportDescriptionReferenceUpdated
bbn-mmc 1347 TCP, UDP multi media conferencing - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1347, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1347'      # process listening on 1347
sudo lsof -nP -i :1347

macOS

sudo lsof -nP -i :1347

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1347 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1347
netstat -ano | findstr :1347

From another machine

nmap -p 1347 -sV <host>
sudo nmap -sU -p 1347 <host>
nc -zv <host> 1347

Block it in the firewall

sudo ufw deny 1347/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1347" -Direction Inbound -LocalPort 1347 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1347 used for?

Port 1347 is assigned by IANA to bbn-mmc (multi media conferencing).

Is port 1347 TCP or UDP?

Port 1347 is registered for TCP and UDP.

Is it safe to open port 1347?

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 1347 is open?

On Linux run "ss -ltnup 'sport = :1347'", on macOS "lsof -nP -i :1347", and on Windows "netstat -ano | findstr :1347" to see the local process. From another machine, "nmap -p 1347 <host>" shows whether it is reachable.

05 Related

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