Port 440
sgcp · TCP/UDP
| Range | System/well-known port (0–1023) |
|---|---|
| Protocol | TCP/UDP |
| Service | sgcp |
Frequently asked questions
What is port 440 used for?
Port 440 is registered with the IANA for sgcp (TCP/UDP). Description: sgcp.
Is port 440 a well-known port?
Yes. Port 440 is in the range 0–1023 (system or well-known ports). On Linux and macOS only privileged processes may bind to these ports.
How do I check whether port 440 is open?
Locally on Linux with ss -tulpn | grep ':440\b', on Windows with netstat -ano | findstr :440. To test a remote host use Test-NetConnection <host> -Port 440 in PowerShell or nc -zv <host> 440 on Linux/macOS.
How do I open port 440 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 440/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=440/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 440" -Direction Inbound -Protocol TCP -LocalPort 440 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | sgcp | sgcp |
| UDP | sgcp | sgcp |