Port 483
ulpnet · TCP/UDP
| Range | System/well-known port (0–1023) |
|---|---|
| Protocol | TCP/UDP |
| Service | ulpnet |
Frequently asked questions
What is port 483 used for?
Port 483 is registered with the IANA for ulpnet (TCP/UDP). Description: ulpnet.
Is port 483 a well-known port?
Yes. Port 483 is in the range 0–1023 (system or well-known ports). On Linux and macOS only privileged processes may bind to these ports.
How do I check whether port 483 is open?
Locally on Linux with ss -tulpn | grep ':483\b', on Windows with netstat -ano | findstr :483. To test a remote host use Test-NetConnection <host> -Port 483 in PowerShell or nc -zv <host> 483 on Linux/macOS.
How do I open port 483 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 483/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=483/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 483" -Direction Inbound -Protocol TCP -LocalPort 483 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | ulpnet | ulpnet |
| UDP | ulpnet | ulpnet |