Port 3978
secure-cfg-svr · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | secure-cfg-svr |
| Registered | 2006-06 |
Frequently asked questions
What is port 3978 used for?
Port 3978 is registered with the IANA for secure-cfg-svr (TCP/UDP). Description: Secured Configuration Server.
Is port 3978 a well-known port?
No. Port 3978 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 3978 is open?
Locally on Linux with ss -tulpn | grep ':3978\b', on Windows with netstat -ano | findstr :3978. To test a remote host use Test-NetConnection <host> -Port 3978 in PowerShell or nc -zv <host> 3978 on Linux/macOS.
How do I open port 3978 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 3978/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3978/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3978" -Direction Inbound -Protocol TCP -LocalPort 3978 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | secure-cfg-svr | Secured Configuration Server |
| UDP | secure-cfg-svr | Secured Configuration Server |