CyberHunter
Local dataset, no network
// Other services

Port 1569: ets

Port 1569 is assigned by IANA to ets (ets).

1569

How ets works

Other services
client:1569etsresponse client:1569etsresponse

The client sends a request to port 1569 and the ets 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 1569 dangerous?

We have no specific security note for port 1569. 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 1569

ServicePortTransportDescriptionReferenceUpdated
ets 1569 TCP, UDP ets - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1569, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1569'      # process listening on 1569
sudo lsof -nP -i :1569

macOS

sudo lsof -nP -i :1569

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1569 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1569
netstat -ano | findstr :1569

From another machine

nmap -p 1569 -sV <host>
sudo nmap -sU -p 1569 <host>
nc -zv <host> 1569

Block it in the firewall

sudo ufw deny 1569/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1569" -Direction Inbound -LocalPort 1569 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1569 used for?

Port 1569 is assigned by IANA to ets (ets).

Is port 1569 TCP or UDP?

Port 1569 is registered for TCP and UDP.

Is it safe to open port 1569?

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 1569 is open?

On Linux run "ss -ltnup 'sport = :1569'", on macOS "lsof -nP -i :1569", and on Windows "netstat -ano | findstr :1569" to see the local process. From another machine, "nmap -p 1569 <host>" shows whether it is reachable.

05 Related
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