Port 9000

cslistener · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicecslistener

Frequently asked questions

What is port 9000 used for?

Port 9000 is registered with the IANA for cslistener (TCP/UDP). Description: CSlistener.

Is port 9000 a well-known port?

No. Port 9000 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 9000 is open?

Locally on Linux with ss -tulpn | grep ':9000\b', on Windows with netstat -ano | findstr :9000. To test a remote host use Test-NetConnection <host> -Port 9000 in PowerShell or nc -zv <host> 9000 on Linux/macOS.

How do I open port 9000 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 9000/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=9000/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 9000" -Direction Inbound -Protocol TCP -LocalPort 9000 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPcslistenerCSlistener
UDPcslistenerCSlistener

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