Port 3125
a13-an · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | a13-an |
Frequently asked questions
What is port 3125 used for?
Port 3125 is registered with the IANA for a13-an (TCP/UDP). Description: A13-AN Interface.
Is port 3125 a well-known port?
No. Port 3125 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 3125 is open?
Locally on Linux with ss -tulpn | grep ':3125\b', on Windows with netstat -ano | findstr :3125. To test a remote host use Test-NetConnection <host> -Port 3125 in PowerShell or nc -zv <host> 3125 on Linux/macOS.
How do I open port 3125 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 3125/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3125/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3125" -Direction Inbound -Protocol TCP -LocalPort 3125 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | a13-an | A13-AN Interface |
| UDP | a13-an | A13-AN Interface |