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// Other services

Port 1522: Ricardo North America License Manager

Port 1522 is assigned by IANA to ricardo-lm (Ricardo North America License Manager).

1522

How ricardo-lm works

Other services
client:1522ricardo-lmresponse client:1522ricardo-lmresponse

The client sends a request to port 1522 and the ricardo-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 1522 dangerous?

We have no specific security note for port 1522. 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 1522

ServicePortTransportDescriptionReferenceUpdated
ricardo-lm 1522 TCP, UDP Ricardo North America License Manager - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1522, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1522'      # process listening on 1522
sudo lsof -nP -i :1522

macOS

sudo lsof -nP -i :1522

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1522 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1522
netstat -ano | findstr :1522

From another machine

nmap -p 1522 -sV <host>
sudo nmap -sU -p 1522 <host>
nc -zv <host> 1522

Block it in the firewall

sudo ufw deny 1522/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1522" -Direction Inbound -LocalPort 1522 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1522 used for?

Port 1522 is assigned by IANA to ricardo-lm (Ricardo North America License Manager).

Is port 1522 TCP or UDP?

Port 1522 is registered for TCP and UDP.

Is it safe to open port 1522?

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 1522 is open?

On Linux run "ss -ltnup 'sport = :1522'", on macOS "lsof -nP -i :1522", and on Windows "netstat -ano | findstr :1522" to see the local process. From another machine, "nmap -p 1522 <host>" shows whether it is reachable.

05 Related
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