Port 3309
tns-adv · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | tns-adv |
Frequently asked questions
What is port 3309 used for?
Port 3309 is registered with the IANA for tns-adv (TCP/UDP). Description: TNS ADV.
Is port 3309 a well-known port?
No. Port 3309 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 3309 is open?
Locally on Linux with ss -tulpn | grep ':3309\b', on Windows with netstat -ano | findstr :3309. To test a remote host use Test-NetConnection <host> -Port 3309 in PowerShell or nc -zv <host> 3309 on Linux/macOS.
How do I open port 3309 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 3309/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3309/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3309" -Direction Inbound -Protocol TCP -LocalPort 3309 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | tns-adv | TNS ADV |
| UDP | tns-adv | TNS ADV |