Port 28001
pqsp · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | pqsp |
| Registered | 2009-09-15 |
Frequently asked questions
What is port 28001 used for?
Port 28001 is registered with the IANA for pqsp (TCP/UDP). Description: PQ Service; Reserved.
Is port 28001 a well-known port?
No. Port 28001 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 28001 is open?
Locally on Linux with ss -tulpn | grep ':28001\b', on Windows with netstat -ano | findstr :28001. To test a remote host use Test-NetConnection <host> -Port 28001 in PowerShell or nc -zv <host> 28001 on Linux/macOS.
How do I open port 28001 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 28001/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=28001/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 28001" -Direction Inbound -Protocol TCP -LocalPort 28001 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | pqsp | PQ Service |
| UDP | – | Reserved |