Port 3120

d2000webserver · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Serviced2000webserver

Frequently asked questions

What is port 3120 used for?

Port 3120 is registered with the IANA for d2000webserver (TCP/UDP). Description: D2000 Webserver Port.

Is port 3120 a well-known port?

No. Port 3120 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 3120 is open?

Locally on Linux with ss -tulpn | grep ':3120\b', on Windows with netstat -ano | findstr :3120. To test a remote host use Test-NetConnection <host> -Port 3120 in PowerShell or nc -zv <host> 3120 on Linux/macOS.

How do I open port 3120 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 3120/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3120/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3120" -Direction Inbound -Protocol TCP -LocalPort 3120 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPd2000webserverD2000 Webserver Port
UDPd2000webserverD2000 Webserver Port

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