CyberHunter
Local dataset, no network
// Other services

Port 1443: Integrated Engineering Software

Port 1443 is assigned by IANA to ies-lm (Integrated Engineering Software).

1443

How ies-lm works

Other services
client:1443ies-lmresponse client:1443ies-lmresponse

The client sends a request to port 1443 and the ies-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 1443 dangerous?

We have no specific security note for port 1443. 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 1443

ServicePortTransportDescriptionReferenceUpdated
ies-lm 1443 TCP, UDP Integrated Engineering Software - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1443, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1443'      # process listening on 1443
sudo lsof -nP -i :1443

macOS

sudo lsof -nP -i :1443

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1443 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1443
netstat -ano | findstr :1443

From another machine

nmap -p 1443 -sV <host>
sudo nmap -sU -p 1443 <host>
nc -zv <host> 1443

Block it in the firewall

sudo ufw deny 1443/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1443" -Direction Inbound -LocalPort 1443 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1443 used for?

Port 1443 is assigned by IANA to ies-lm (Integrated Engineering Software).

Is port 1443 TCP or UDP?

Port 1443 is registered for TCP and UDP.

Is it safe to open port 1443?

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 1443 is open?

On Linux run "ss -ltnup 'sport = :1443'", on macOS "lsof -nP -i :1443", and on Windows "netstat -ano | findstr :1443" to see the local process. From another machine, "nmap -p 1443 <host>" shows whether it is reachable.

05 Related
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp

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