CyberHunter
Local dataset, no network
// Other services

Port 552: DeviceShare

Port 552 is assigned by IANA to devshr-nts (DeviceShare).

552

How devshr-nts works

Other services
client:552devshr-ntsresponse client:552devshr-ntsresponse

The client sends a request to port 552 and the devshr-nts 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 552 dangerous?

We have no specific security note for port 552. 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 552

ServicePortTransportDescriptionReferenceUpdated
devshr-nts 552 TCP, UDP DeviceShare - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 552, and is it reachable?

Linux

sudo ss -ltnup 'sport = :552'      # process listening on 552
sudo lsof -nP -i :552

macOS

sudo lsof -nP -i :552

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 552 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 552
netstat -ano | findstr :552

From another machine

nmap -p 552 -sV <host>
sudo nmap -sU -p 552 <host>
nc -zv <host> 552

Block it in the firewall

sudo ufw deny 552/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 552" -Direction Inbound -LocalPort 552 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 552 used for?

Port 552 is assigned by IANA to devshr-nts (DeviceShare).

Is port 552 TCP or UDP?

Port 552 is registered for TCP and UDP.

Is it safe to open port 552?

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 552 is open?

On Linux run "ss -ltnup 'sport = :552'", on macOS "lsof -nP -i :552", and on Windows "netstat -ano | findstr :552" to see the local process. From another machine, "nmap -p 552 <host>" shows whether it is reachable.

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