Port 16309
etb4j · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | etb4j |
| Registered | 2004-11 |
Frequently asked questions
What is port 16309 used for?
Port 16309 is registered with the IANA for etb4j (TCP/UDP). Description: etb4j.
Is port 16309 a well-known port?
No. Port 16309 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 16309 is open?
Locally on Linux with ss -tulpn | grep ':16309\b', on Windows with netstat -ano | findstr :16309. To test a remote host use Test-NetConnection <host> -Port 16309 in PowerShell or nc -zv <host> 16309 on Linux/macOS.
How do I open port 16309 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 16309/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=16309/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 16309" -Direction Inbound -Protocol TCP -LocalPort 16309 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | etb4j | etb4j |
| UDP | etb4j | etb4j |