Port 3103

autocuesmi · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Serviceautocuesmi

Frequently asked questions

What is port 3103 used for?

Port 3103 is registered with the IANA for autocuesmi (TCP/UDP). Description: Autocue SMI Protocol.

Is port 3103 a well-known port?

No. Port 3103 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 3103 is open?

Locally on Linux with ss -tulpn | grep ':3103\b', on Windows with netstat -ano | findstr :3103. To test a remote host use Test-NetConnection <host> -Port 3103 in PowerShell or nc -zv <host> 3103 on Linux/macOS.

How do I open port 3103 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 3103/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3103/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3103" -Direction Inbound -Protocol TCP -LocalPort 3103 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPautocuesmiAutocue SMI Protocol
UDPautocuesmiAutocue SMI Protocol

Nearby entries