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// Other services

Port 5475: The Apsolab company's data retrieval protocol

Port 5475 is assigned by IANA to apsolab-data (The Apsolab company's data retrieval protocol).

5475

How apsolab-data works

Other services
client:5475apsolab-dataresponse client:5475apsolab-dataresponse

The client sends a request to port 5475 and the apsolab-data 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 5475 dangerous?

We have no specific security note for port 5475. 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 5475

ServicePortTransportDescriptionReferenceUpdated
apsolab-data 5475 TCP The Apsolab company's data retrieval protocol - 2014-11-10
-5475-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 5475, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5475'      # process listening on 5475
sudo lsof -nP -i :5475

macOS

sudo lsof -nP -i :5475

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5475 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5475
netstat -ano | findstr :5475

From another machine

nmap -p 5475 -sV <host>
nc -zv <host> 5475

Block it in the firewall

sudo ufw deny 5475/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5475" -Direction Inbound -LocalPort 5475 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5475 used for?

Port 5475 is assigned by IANA to apsolab-data (The Apsolab company's data retrieval protocol).

Is port 5475 TCP or UDP?

Port 5475 is registered for TCP.

Is it safe to open port 5475?

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 5475 is open?

On Linux run "ss -ltnup 'sport = :5475'", on macOS "lsof -nP -i :5475", and on Windows "netstat -ano | findstr :5475" to see the local process. From another machine, "nmap -p 5475 <host>" shows whether it is reachable.

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