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// Other services

Port 6483: SunVTS RMI

Port 6483 is assigned by IANA to SunVTS-RMI (SunVTS RMI).

6483

How SunVTS-RMI works

Other services
client:6483SunVTS-RMIresponse client:6483SunVTS-RMIresponse

The client sends a request to port 6483 and the SunVTS-RMI 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 6483 dangerous?

We have no specific security note for port 6483. 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 6483

ServicePortTransportDescriptionReferenceUpdated
SunVTS-RMI 6483 TCP, UDP SunVTS RMI - 2007-06

// source: IANA service name and port number registry

03 Check it

Which program uses port 6483, and is it reachable?

Linux

sudo ss -ltnup 'sport = :6483'      # process listening on 6483
sudo lsof -nP -i :6483

macOS

sudo lsof -nP -i :6483

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6483 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 6483
netstat -ano | findstr :6483

From another machine

nmap -p 6483 -sV <host>
sudo nmap -sU -p 6483 <host>
nc -zv <host> 6483

Block it in the firewall

sudo ufw deny 6483/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 6483" -Direction Inbound -LocalPort 6483 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 6483 used for?

Port 6483 is assigned by IANA to SunVTS-RMI (SunVTS RMI).

Is port 6483 TCP or UDP?

Port 6483 is registered for TCP and UDP.

Is it safe to open port 6483?

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 6483 is open?

On Linux run "ss -ltnup 'sport = :6483'", on macOS "lsof -nP -i :6483", and on Windows "netstat -ano | findstr :6483" to see the local process. From another machine, "nmap -p 6483 <host>" shows whether it is reachable.

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