Port 40404
sptx · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | sptx |
| Registered | 2013-12-09 |
Frequently asked questions
What is port 40404 used for?
Port 40404 is registered with the IANA for sptx (TCP/UDP). Description: Simplify Printing TX; Reserved.
Is port 40404 a well-known port?
No. Port 40404 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 40404 is open?
Locally on Linux with ss -tulpn | grep ':40404\b', on Windows with netstat -ano | findstr :40404. To test a remote host use Test-NetConnection <host> -Port 40404 in PowerShell or nc -zv <host> 40404 on Linux/macOS.
How do I open port 40404 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 40404/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=40404/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 40404" -Direction Inbound -Protocol TCP -LocalPort 40404 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | sptx | Simplify Printing TX |
| UDP | – | Reserved |