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// Other services

Port 5747: Wildbits Tunatic

Port 5747 is assigned by IANA to tunatic (Wildbits Tunatic).

5747

How tunatic works

Other services
client:5747tunaticresponse client:5747tunaticresponse

The client sends a request to port 5747 and the tunatic 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 5747 dangerous?

We have no specific security note for port 5747. 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 5747

ServicePortTransportDescriptionReferenceUpdated
tunatic 5747 TCP, UDP Wildbits Tunatic - 2005-08

// source: IANA service name and port number registry

03 Check it

Which program uses port 5747, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5747'      # process listening on 5747
sudo lsof -nP -i :5747

macOS

sudo lsof -nP -i :5747

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5747 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5747
netstat -ano | findstr :5747

From another machine

nmap -p 5747 -sV <host>
sudo nmap -sU -p 5747 <host>
nc -zv <host> 5747

Block it in the firewall

sudo ufw deny 5747/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5747" -Direction Inbound -LocalPort 5747 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5747 used for?

Port 5747 is assigned by IANA to tunatic (Wildbits Tunatic).

Is port 5747 TCP or UDP?

Port 5747 is registered for TCP and UDP.

Is it safe to open port 5747?

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 5747 is open?

On Linux run "ss -ltnup 'sport = :5747'", on macOS "lsof -nP -i :5747", and on Windows "netstat -ano | findstr :5747" to see the local process. From another machine, "nmap -p 5747 <host>" shows whether it is reachable.

05 Related
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