CyberHunter
Local dataset, no network
// Other services

Port 1083: Anasoft License Manager

Port 1083 is assigned by IANA to ansoft-lm-1 (Anasoft License Manager).

1083

How ansoft-lm-1 works

Other services
client:1083ansoft-lm-1response client:1083ansoft-lm-1response

The client sends a request to port 1083 and the ansoft-lm-1 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 1083 dangerous?

We have no specific security note for port 1083. 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 1083

ServicePortTransportDescriptionReferenceUpdated
ansoft-lm-1 1083 TCP, UDP Anasoft License Manager - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1083, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1083'      # process listening on 1083
sudo lsof -nP -i :1083

macOS

sudo lsof -nP -i :1083

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1083 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1083
netstat -ano | findstr :1083

From another machine

nmap -p 1083 -sV <host>
sudo nmap -sU -p 1083 <host>
nc -zv <host> 1083

Block it in the firewall

sudo ufw deny 1083/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1083" -Direction Inbound -LocalPort 1083 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1083 used for?

Port 1083 is assigned by IANA to ansoft-lm-1 (Anasoft License Manager).

Is port 1083 TCP or UDP?

Port 1083 is registered for TCP and UDP.

Is it safe to open port 1083?

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 1083 is open?

On Linux run "ss -ltnup 'sport = :1083'", on macOS "lsof -nP -i :1083", and on Windows "netstat -ano | findstr :1083" to see the local process. From another machine, "nmap -p 1083 <host>" shows whether it is reachable.

05 Related
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