Port 5556
freeciv · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | freeciv |
| Registered | 2006-01 |
Frequently asked questions
What is port 5556 used for?
Port 5556 is registered with the IANA for freeciv (TCP/UDP). Description: Freeciv gameplay.
Is port 5556 a well-known port?
No. Port 5556 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 5556 is open?
Locally on Linux with ss -tulpn | grep ':5556\b', on Windows with netstat -ano | findstr :5556. To test a remote host use Test-NetConnection <host> -Port 5556 in PowerShell or nc -zv <host> 5556 on Linux/macOS.
How do I open port 5556 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 5556/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=5556/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 5556" -Direction Inbound -Protocol TCP -LocalPort 5556 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | freeciv | Freeciv gameplay |
| UDP | freeciv | Freeciv gameplay |