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// Other services

Port 6147: Montage License Manager

Port 6147 is assigned by IANA to montage-lm (Montage License Manager).

6147

How montage-lm works

Other services
client:6147montage-lmresponse client:6147montage-lmresponse

The client sends a request to port 6147 and the montage-lm 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 6147 dangerous?

We have no specific security note for port 6147. 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 6147

ServicePortTransportDescriptionReferenceUpdated
montage-lm 6147 TCP, UDP Montage License Manager - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 6147, and is it reachable?

Linux

sudo ss -ltnup 'sport = :6147'      # process listening on 6147
sudo lsof -nP -i :6147

macOS

sudo lsof -nP -i :6147

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6147 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 6147
netstat -ano | findstr :6147

From another machine

nmap -p 6147 -sV <host>
sudo nmap -sU -p 6147 <host>
nc -zv <host> 6147

Block it in the firewall

sudo ufw deny 6147/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 6147" -Direction Inbound -LocalPort 6147 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 6147 used for?

Port 6147 is assigned by IANA to montage-lm (Montage License Manager).

Is port 6147 TCP or UDP?

Port 6147 is registered for TCP and UDP.

Is it safe to open port 6147?

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 6147 is open?

On Linux run "ss -ltnup 'sport = :6147'", on macOS "lsof -nP -i :6147", and on Windows "netstat -ano | findstr :6147" to see the local process. From another machine, "nmap -p 6147 <host>" shows whether it is reachable.

05 Related
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