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// Other services

Port 2809: CORBA LOC

Port 2809 is assigned by IANA to corbaloc (CORBA LOC).

2809

How corbaloc works

Other services
client:2809corbalocresponse client:2809corbalocresponse

The client sends a request to port 2809 and the corbaloc 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 2809 dangerous?

We have no specific security note for port 2809. 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 2809

ServicePortTransportDescriptionReferenceUpdated
corbaloc 2809 TCP, UDP CORBA LOC - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2809, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2809'      # process listening on 2809
sudo lsof -nP -i :2809

macOS

sudo lsof -nP -i :2809

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2809 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2809
netstat -ano | findstr :2809

From another machine

nmap -p 2809 -sV <host>
sudo nmap -sU -p 2809 <host>
nc -zv <host> 2809

Block it in the firewall

sudo ufw deny 2809/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2809" -Direction Inbound -LocalPort 2809 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2809 used for?

Port 2809 is assigned by IANA to corbaloc (CORBA LOC).

Is port 2809 TCP or UDP?

Port 2809 is registered for TCP and UDP.

Is it safe to open port 2809?

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 2809 is open?

On Linux run "ss -ltnup 'sport = :2809'", on macOS "lsof -nP -i :2809", and on Windows "netstat -ano | findstr :2809" to see the local process. From another machine, "nmap -p 2809 <host>" shows whether it is reachable.

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