CyberHunter
Local dataset, no network
// Other services

Port 580: SNTP HEARTBEAT

Port 580 is assigned by IANA to sntp-heartbeat (SNTP HEARTBEAT).

580

How sntp-heartbeat works

Other services
client:580sntp-heartbeatresponse client:580sntp-heartbeatresponse

The client sends a request to port 580 and the sntp-heartbeat 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
Well-known (0-1023)
Category
Other services
01 Security

Is port 580 dangerous?

We have no specific security note for port 580. 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 580

ServicePortTransportDescriptionReferenceUpdated
sntp-heartbeat 580 TCP, UDP SNTP HEARTBEAT - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 580, and is it reachable?

Linux

sudo ss -ltnup 'sport = :580'      # process listening on 580
sudo lsof -nP -i :580

macOS

sudo lsof -nP -i :580

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 580 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 580
netstat -ano | findstr :580

From another machine

nmap -p 580 -sV <host>
sudo nmap -sU -p 580 <host>
nc -zv <host> 580

Block it in the firewall

sudo ufw deny 580/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 580" -Direction Inbound -LocalPort 580 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 580 used for?

Port 580 is assigned by IANA to sntp-heartbeat (SNTP HEARTBEAT).

Is port 580 TCP or UDP?

Port 580 is registered for TCP and UDP.

Is it safe to open port 580?

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 580 is open?

On Linux run "ss -ltnup 'sport = :580'", on macOS "lsof -nP -i :580", and on Windows "netstat -ano | findstr :580" to see the local process. From another machine, "nmap -p 580 <host>" shows whether it is reachable.

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