CyberHunter
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// Other services

Port 6566: SANE Control Port

Port 6566 is assigned by IANA to sane-port (SANE Control Port).

6566

How sane-port works

Other services
client:6566sane-portresponse client:6566sane-portresponse

The client sends a request to port 6566 and the sane-port 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 6566 dangerous?

We have no specific security note for port 6566. 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 6566

ServicePortTransportDescriptionReferenceUpdated
sane-port 6566 TCP, UDP SANE Control Port - 2002-10

// source: IANA service name and port number registry

03 Check it

Which program uses port 6566, and is it reachable?

Linux

sudo ss -ltnup 'sport = :6566'      # process listening on 6566
sudo lsof -nP -i :6566

macOS

sudo lsof -nP -i :6566

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6566 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 6566
netstat -ano | findstr :6566

From another machine

nmap -p 6566 -sV <host>
sudo nmap -sU -p 6566 <host>
nc -zv <host> 6566

Block it in the firewall

sudo ufw deny 6566/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 6566" -Direction Inbound -LocalPort 6566 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 6566 used for?

Port 6566 is assigned by IANA to sane-port (SANE Control Port).

Is port 6566 TCP or UDP?

Port 6566 is registered for TCP and UDP.

Is it safe to open port 6566?

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 6566 is open?

On Linux run "ss -ltnup 'sport = :6566'", on macOS "lsof -nP -i :6566", and on Windows "netstat -ano | findstr :6566" to see the local process. From another machine, "nmap -p 6566 <host>" shows whether it is reachable.

05 Related
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp

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