Port 3308

tns-server · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicetns-server

Frequently asked questions

What is port 3308 used for?

Port 3308 is registered with the IANA for tns-server (TCP/UDP). Description: TNS Server.

Is port 3308 a well-known port?

No. Port 3308 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 3308 is open?

Locally on Linux with ss -tulpn | grep ':3308\b', on Windows with netstat -ano | findstr :3308. To test a remote host use Test-NetConnection <host> -Port 3308 in PowerShell or nc -zv <host> 3308 on Linux/macOS.

How do I open port 3308 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 3308/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3308/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3308" -Direction Inbound -Protocol TCP -LocalPort 3308 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPtns-serverTNS Server
UDPtns-serverTNS Server

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