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// Web

Port 6480: Service Registry Default HTTP Domain

Port 6480 is assigned by IANA to sun-sr-http (Service Registry Default HTTP Domain).

6480

How sun-sr-http works

Web
browser:6480sun-sr-http browser:6480sun-sr-http

A browser sends an HTTP request to port 6480 and the sun-sr-http server sends the page back.

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
Web
01 Security

Is port 6480 dangerous?

We have no specific security note for port 6480. Its risk depends on the program actually listening on it. General advice for web services:

  • Serve it over HTTPS only and check the HTTP security headers.
  • Keep admin consoles and development servers off the Internet.
  • Patch the application server and remove default credentials and sample apps.
02 Registry

IANA registry entries for port 6480

ServicePortTransportDescriptionReferenceUpdated
sun-sr-http 6480 TCP, UDP Service Registry Default HTTP Domain - 2006-03

// source: IANA service name and port number registry

03 Check it

Which program uses port 6480, and is it reachable?

Linux

sudo ss -ltnup 'sport = :6480'      # process listening on 6480
sudo lsof -nP -i :6480

macOS

sudo lsof -nP -i :6480

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6480 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 6480
netstat -ano | findstr :6480

From another machine

nmap -p 6480 -sV <host>
sudo nmap -sU -p 6480 <host>
nc -zv <host> 6480

Block it in the firewall

sudo ufw deny 6480/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 6480" -Direction Inbound -LocalPort 6480 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 6480 used for?

Port 6480 is assigned by IANA to sun-sr-http (Service Registry Default HTTP Domain).

Is port 6480 TCP or UDP?

Port 6480 is registered for TCP and UDP.

Is it safe to open port 6480?

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. Serve it over HTTPS only and check the HTTP security headers.

How do I check if port 6480 is open?

On Linux run "ss -ltnup 'sport = :6480'", on macOS "lsof -nP -i :6480", and on Windows "netstat -ano | findstr :6480" to see the local process. From another machine, "nmap -p 6480 <host>" shows whether it is reachable.

05 Related
:443 HTTPS tcp · udp · sctp · low risk :80 HTTP tcp · udp · sctp · moderate risk :8080 HTTP alternate tcp · udp · high risk :8443 HTTPS alternate tcp · udp · moderate risk :3000 Dev servers / Grafana tcp · udp · moderate risk :5000 Flask / Docker registry / UPnP tcp · udp · moderate risk :8000 HTTP alternate (dev) tcp · udp · moderate risk :8888 Jupyter / HTTP alternate tcp · udp · high risk

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