Port 4122

fprams · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicefprams
Registered2006-12

Frequently asked questions

What is port 4122 used for?

Port 4122 is registered with the IANA for fprams (TCP/UDP). Description: Fiber Patrol Alarm Service.

Is port 4122 a well-known port?

No. Port 4122 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 4122 is open?

Locally on Linux with ss -tulpn | grep ':4122\b', on Windows with netstat -ano | findstr :4122. To test a remote host use Test-NetConnection <host> -Port 4122 in PowerShell or nc -zv <host> 4122 on Linux/macOS.

How do I open port 4122 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 4122/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=4122/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 4122" -Direction Inbound -Protocol TCP -LocalPort 4122 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPfpramsFiber Patrol Alarm Service
UDPfpramsFiber Patrol Alarm Service

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