Port 3875

pnbscada · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicepnbscada

Frequently asked questions

What is port 3875 used for?

Port 3875 is registered with the IANA for pnbscada (TCP/UDP). Description: PNBSCADA.

Is port 3875 a well-known port?

No. Port 3875 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 3875 is open?

Locally on Linux with ss -tulpn | grep ':3875\b', on Windows with netstat -ano | findstr :3875. To test a remote host use Test-NetConnection <host> -Port 3875 in PowerShell or nc -zv <host> 3875 on Linux/macOS.

How do I open port 3875 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 3875/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3875/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3875" -Direction Inbound -Protocol TCP -LocalPort 3875 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPpnbscadaPNBSCADA
UDPpnbscadaPNBSCADA

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