Port 2404
iec-104 · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | iec-104 |
Frequently asked questions
What is port 2404 used for?
Port 2404 is registered with the IANA for iec-104 (TCP/UDP). Description: IEC 60870-5-104 process control over IP.
Is port 2404 a well-known port?
No. Port 2404 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 2404 is open?
Locally on Linux with ss -tulpn | grep ':2404\b', on Windows with netstat -ano | findstr :2404. To test a remote host use Test-NetConnection <host> -Port 2404 in PowerShell or nc -zv <host> 2404 on Linux/macOS.
How do I open port 2404 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 2404/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=2404/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 2404" -Direction Inbound -Protocol TCP -LocalPort 2404 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | iec-104 | IEC 60870-5-104 process control over IP |
| UDP | iec-104 | IEC 60870-5-104 process control over IP |