Port 3437

autocueds · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Serviceautocueds
Registered2002-03

Frequently asked questions

What is port 3437 used for?

Port 3437 is registered with the IANA for autocueds (TCP/UDP). Description: Autocue Directory Service.

Is port 3437 a well-known port?

No. Port 3437 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 3437 is open?

Locally on Linux with ss -tulpn | grep ':3437\b', on Windows with netstat -ano | findstr :3437. To test a remote host use Test-NetConnection <host> -Port 3437 in PowerShell or nc -zv <host> 3437 on Linux/macOS.

How do I open port 3437 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 3437/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3437/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3437" -Direction Inbound -Protocol TCP -LocalPort 3437 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPautocuedsAutocue Directory Service
UDPautocuedsAutocue Directory Service

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