Port 1506

utcd · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Serviceutcd

Frequently asked questions

What is port 1506 used for?

Port 1506 is registered with the IANA for utcd (TCP/UDP). Description: Universal Time daemon (utcd).

Is port 1506 a well-known port?

No. Port 1506 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 1506 is open?

Locally on Linux with ss -tulpn | grep ':1506\b', on Windows with netstat -ano | findstr :1506. To test a remote host use Test-NetConnection <host> -Port 1506 in PowerShell or nc -zv <host> 1506 on Linux/macOS.

How do I open port 1506 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 1506/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=1506/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 1506" -Direction Inbound -Protocol TCP -LocalPort 1506 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPutcdUniversal Time daemon (utcd)
UDPutcdUniversal Time daemon (utcd)

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