Port 4123
z-wave · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | z-wave |
| Registered | 2007-02 |
| Modified | 2012-11-08 |
Frequently asked questions
What is port 4123 used for?
Port 4123 is registered with the IANA for z-wave (TCP/UDP). Description: Z-Wave Protocol.
Is port 4123 a well-known port?
No. Port 4123 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 4123 is open?
Locally on Linux with ss -tulpn | grep ':4123\b', on Windows with netstat -ano | findstr :4123. To test a remote host use Test-NetConnection <host> -Port 4123 in PowerShell or nc -zv <host> 4123 on Linux/macOS.
How do I open port 4123 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 4123/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=4123/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 4123" -Direction Inbound -Protocol TCP -LocalPort 4123 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | z-wave | Z-Wave Protocol |
| UDP | z-wave | Z-Wave Protocol |