Port 4433
vop · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | vop |
| Registered | 2012-02-01 |
Frequently asked questions
What is port 4433 used for?
Port 4433 is registered with the IANA for vop (TCP/UDP). Description: Versile Object Protocol; Reserved.
Is port 4433 a well-known port?
No. Port 4433 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 4433 is open?
Locally on Linux with ss -tulpn | grep ':4433\b', on Windows with netstat -ano | findstr :4433. To test a remote host use Test-NetConnection <host> -Port 4433 in PowerShell or nc -zv <host> 4433 on Linux/macOS.
How do I open port 4433 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 4433/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=4433/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 4433" -Direction Inbound -Protocol TCP -LocalPort 4433 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | vop | Versile Object Protocol |
| UDP | – | Reserved |