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// Messaging & queues

Port 6484: Service Registry Default JMS Domain

Port 6484 is assigned by IANA to sun-sr-jms (Service Registry Default JMS Domain).

6484

How sun-sr-jms works

Messaging & queues
producerconsumerqueuesun-sr-jms producerconsumerqueuesun-sr-jms

Producers publish messages into a queue on port 6484; consumers pick them up in order, at their own pace.

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
Messaging & queues
01 Security

Is port 6484 dangerous?

We have no specific security note for port 6484. Its risk depends on the program actually listening on it. General advice for messaging & queues services:

  • Require authentication and TLS on brokers and coordination services.
  • Restrict clients by network and per-topic or per-queue permissions.
  • Remove default accounts.
02 Registry

IANA registry entries for port 6484

ServicePortTransportDescriptionReferenceUpdated
sun-sr-jms 6484 TCP, UDP Service Registry Default JMS Domain - 2006-03

// source: IANA service name and port number registry

03 Check it

Which program uses port 6484, and is it reachable?

Linux

sudo ss -ltnup 'sport = :6484'      # process listening on 6484
sudo lsof -nP -i :6484

macOS

sudo lsof -nP -i :6484

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6484 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 6484
netstat -ano | findstr :6484

From another machine

nmap -p 6484 -sV <host>
sudo nmap -sU -p 6484 <host>
nc -zv <host> 6484

Block it in the firewall

sudo ufw deny 6484/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 6484" -Direction Inbound -LocalPort 6484 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 6484 used for?

Port 6484 is assigned by IANA to sun-sr-jms (Service Registry Default JMS Domain).

Is port 6484 TCP or UDP?

Port 6484 is registered for TCP and UDP.

Is it safe to open port 6484?

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. Require authentication and TLS on brokers and coordination services.

How do I check if port 6484 is open?

On Linux run "ss -ltnup 'sport = :6484'", on macOS "lsof -nP -i :6484", and on Windows "netstat -ano | findstr :6484" to see the local process. From another machine, "nmap -p 6484 <host>" shows whether it is reachable.

05 Related
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