Port 23401

novar-alarm · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicenovar-alarm
Registered2006-02

Frequently asked questions

What is port 23401 used for?

Port 23401 is registered with the IANA for novar-alarm (TCP/UDP). Description: Novar Alarm.

Is port 23401 a well-known port?

No. Port 23401 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 23401 is open?

Locally on Linux with ss -tulpn | grep ':23401\b', on Windows with netstat -ano | findstr :23401. To test a remote host use Test-NetConnection <host> -Port 23401 in PowerShell or nc -zv <host> 23401 on Linux/macOS.

How do I open port 23401 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 23401/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=23401/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 23401" -Direction Inbound -Protocol TCP -LocalPort 23401 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPnovar-alarmNovar Alarm
UDPnovar-alarmNovar Alarm

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