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// Other services

Port 1422: Autodesk License Manager

Port 1422 is assigned by IANA to autodesk-lm (Autodesk License Manager).

1422

How autodesk-lm works

Other services
client:1422autodesk-lmresponse client:1422autodesk-lmresponse

The client sends a request to port 1422 and the autodesk-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 1422 dangerous?

We have no specific security note for port 1422. 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 1422

ServicePortTransportDescriptionReferenceUpdated
autodesk-lm 1422 TCP, UDP Autodesk License Manager - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1422, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1422'      # process listening on 1422
sudo lsof -nP -i :1422

macOS

sudo lsof -nP -i :1422

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1422 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1422
netstat -ano | findstr :1422

From another machine

nmap -p 1422 -sV <host>
sudo nmap -sU -p 1422 <host>
nc -zv <host> 1422

Block it in the firewall

sudo ufw deny 1422/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1422" -Direction Inbound -LocalPort 1422 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1422 used for?

Port 1422 is assigned by IANA to autodesk-lm (Autodesk License Manager).

Is port 1422 TCP or UDP?

Port 1422 is registered for TCP and UDP.

Is it safe to open port 1422?

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 1422 is open?

On Linux run "ss -ltnup 'sport = :1422'", on macOS "lsof -nP -i :1422", and on Windows "netstat -ano | findstr :1422" to see the local process. From another machine, "nmap -p 1422 <host>" shows whether it is reachable.

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