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// Other services

Port 1047: Sun's NEO Object Request Broker

Port 1047 is assigned by IANA to neod1 (Sun's NEO Object Request Broker).

1047

How neod1 works

Other services
client:1047neod1response client:1047neod1response

The client sends a request to port 1047 and the neod1 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 1047 dangerous?

We have no specific security note for port 1047. 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 1047

ServicePortTransportDescriptionReferenceUpdated
neod1 1047 TCP, UDP Sun's NEO Object Request Broker - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1047, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1047'      # process listening on 1047
sudo lsof -nP -i :1047

macOS

sudo lsof -nP -i :1047

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1047 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1047
netstat -ano | findstr :1047

From another machine

nmap -p 1047 -sV <host>
sudo nmap -sU -p 1047 <host>
nc -zv <host> 1047

Block it in the firewall

sudo ufw deny 1047/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1047" -Direction Inbound -LocalPort 1047 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1047 used for?

Port 1047 is assigned by IANA to neod1 (Sun's NEO Object Request Broker).

Is port 1047 TCP or UDP?

Port 1047 is registered for TCP and UDP.

Is it safe to open port 1047?

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 1047 is open?

On Linux run "ss -ltnup 'sport = :1047'", on macOS "lsof -nP -i :1047", and on Windows "netstat -ano | findstr :1047" to see the local process. From another machine, "nmap -p 1047 <host>" shows whether it is reachable.

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