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Port 5471: The Apsolab company's secure data collection protocol (native api)

Port 5471 is assigned by IANA to apsolab-cols (The Apsolab company's secure data collection protocol (native api)).

5471

How apsolab-cols works

Other services
client:5471apsolab-colsresponse client:5471apsolab-colsresponse

The client sends a request to port 5471 and the apsolab-cols service answers.

Transport
TCP
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 5471 dangerous?

We have no specific security note for port 5471. 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 5471

ServicePortTransportDescriptionReferenceUpdated
apsolab-cols 5471 TCP The Apsolab company's secure data collection protocol (native api) - 2014-11-10
-5471-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 5471, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5471'      # process listening on 5471
sudo lsof -nP -i :5471

macOS

sudo lsof -nP -i :5471

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5471 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5471
netstat -ano | findstr :5471

From another machine

nmap -p 5471 -sV <host>
nc -zv <host> 5471

Block it in the firewall

sudo ufw deny 5471/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5471" -Direction Inbound -LocalPort 5471 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5471 used for?

Port 5471 is assigned by IANA to apsolab-cols (The Apsolab company's secure data collection protocol (native api)).

Is port 5471 TCP or UDP?

Port 5471 is registered for TCP.

Is it safe to open port 5471?

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 5471 is open?

On Linux run "ss -ltnup 'sport = :5471'", on macOS "lsof -nP -i :5471", and on Windows "netstat -ano | findstr :5471" to see the local process. From another machine, "nmap -p 5471 <host>" shows whether it is reachable.

05 Related
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