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// Other services

Port 3481: CleanerLive remote ctrl

Port 3481 is assigned by IANA to cleanerliverc (CleanerLive remote ctrl).

3481

How cleanerliverc works

Other services
client:3481cleanerlivercresponse client:3481cleanerlivercresponse

The client sends a request to port 3481 and the cleanerliverc 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 3481 dangerous?

We have no specific security note for port 3481. 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 3481

ServicePortTransportDescriptionReferenceUpdated
cleanerliverc 3481 TCP, UDP CleanerLive remote ctrl - 2002-04

// source: IANA service name and port number registry

03 Check it

Which program uses port 3481, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3481'      # process listening on 3481
sudo lsof -nP -i :3481

macOS

sudo lsof -nP -i :3481

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3481 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3481
netstat -ano | findstr :3481

From another machine

nmap -p 3481 -sV <host>
sudo nmap -sU -p 3481 <host>
nc -zv <host> 3481

Block it in the firewall

sudo ufw deny 3481/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3481" -Direction Inbound -LocalPort 3481 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3481 used for?

Port 3481 is assigned by IANA to cleanerliverc (CleanerLive remote ctrl).

Is port 3481 TCP or UDP?

Port 3481 is registered for TCP and UDP.

Is it safe to open port 3481?

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 3481 is open?

On Linux run "ss -ltnup 'sport = :3481'", on macOS "lsof -nP -i :3481", and on Windows "netstat -ano | findstr :3481" to see the local process. From another machine, "nmap -p 3481 <host>" shows whether it is reachable.

05 Related
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