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// Other services

Port 48004: NimbusDB Connector

Port 48004 is assigned by IANA to nimbusdb (NimbusDB Connector).

48004

How nimbusdb works

Other services
client:48004nimbusdbresponse client:48004nimbusdbresponse

The client sends a request to port 48004 and the nimbusdb service answers.

Transport
TCP
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 48004 dangerous?

We have no specific security note for port 48004. 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 48004

ServicePortTransportDescriptionReferenceUpdated
nimbusdb 48004 TCP NimbusDB Connector - 2011-01-24
-48004-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 48004, and is it reachable?

Linux

sudo ss -ltnup 'sport = :48004'      # process listening on 48004
sudo lsof -nP -i :48004

macOS

sudo lsof -nP -i :48004

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 48004 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 48004
netstat -ano | findstr :48004

From another machine

nmap -p 48004 -sV <host>
nc -zv <host> 48004

Block it in the firewall

sudo ufw deny 48004/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 48004" -Direction Inbound -LocalPort 48004 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 48004 used for?

Port 48004 is assigned by IANA to nimbusdb (NimbusDB Connector).

Is port 48004 TCP or UDP?

Port 48004 is registered for TCP.

Is it safe to open port 48004?

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 48004 is open?

On Linux run "ss -ltnup 'sport = :48004'", on macOS "lsof -nP -i :48004", and on Windows "netstat -ano | findstr :48004" to see the local process. From another machine, "nmap -p 48004 <host>" shows whether it is reachable.

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