CyberHunter
Local dataset, no network
// Other services

Port 2909: Funk Dialout

Port 2909 is assigned by IANA to funk-dialout (Funk Dialout).

2909

How funk-dialout works

Other services
client:2909funk-dialoutresponse client:2909funk-dialoutresponse

The client sends a request to port 2909 and the funk-dialout service answers.

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
Other services
01 Security

Is port 2909 dangerous?

We have no specific security note for port 2909. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 2909

ServicePortTransportDescriptionReferenceUpdated
funk-dialout 2909 TCP, UDP Funk Dialout - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2909, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2909'      # process listening on 2909
sudo lsof -nP -i :2909

macOS

sudo lsof -nP -i :2909

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2909 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2909
netstat -ano | findstr :2909

From another machine

nmap -p 2909 -sV <host>
sudo nmap -sU -p 2909 <host>
nc -zv <host> 2909

Block it in the firewall

sudo ufw deny 2909/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2909" -Direction Inbound -LocalPort 2909 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2909 used for?

Port 2909 is assigned by IANA to funk-dialout (Funk Dialout).

Is port 2909 TCP or UDP?

Port 2909 is registered for TCP and UDP.

Is it safe to open port 2909?

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. Close the port if nothing on the host needs it.

How do I check if port 2909 is open?

On Linux run "ss -ltnup 'sport = :2909'", on macOS "lsof -nP -i :2909", and on Windows "netstat -ano | findstr :2909" to see the local process. From another machine, "nmap -p 2909 <host>" shows whether it is reachable.

05 Related
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