Port 4104
brlp-3 · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | brlp-3 |
| Registered | 2006-03 |
Frequently asked questions
What is port 4104 used for?
Port 4104 is registered with the IANA for brlp-3 (TCP/UDP). Description: Braille protocol.
Is port 4104 a well-known port?
No. Port 4104 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 4104 is open?
Locally on Linux with ss -tulpn | grep ':4104\b', on Windows with netstat -ano | findstr :4104. To test a remote host use Test-NetConnection <host> -Port 4104 in PowerShell or nc -zv <host> 4104 on Linux/macOS.
How do I open port 4104 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 4104/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=4104/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 4104" -Direction Inbound -Protocol TCP -LocalPort 4104 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | brlp-3 | Braille protocol |
| UDP | brlp-3 | Braille protocol |