Port 4727
fcis and fcis-disc · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | fcis and fcis-disc |
| Registered | 2010-10-15 |
Frequently asked questions
What is port 4727 used for?
Port 4727 is registered with the IANA for fcis and fcis-disc (TCP/UDP). Description: F-Link Client Information Service; F-Link Client Information Service Discovery.
Is port 4727 a well-known port?
No. Port 4727 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 4727 is open?
Locally on Linux with ss -tulpn | grep ':4727\b', on Windows with netstat -ano | findstr :4727. To test a remote host use Test-NetConnection <host> -Port 4727 in PowerShell or nc -zv <host> 4727 on Linux/macOS.
How do I open port 4727 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 4727/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=4727/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 4727" -Direction Inbound -Protocol TCP -LocalPort 4727 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | fcis | F-Link Client Information Service |
| UDP | fcis-disc | F-Link Client Information Service Discovery |