PHP-FPM / SonarQube / Portainer
What is Port 9000?
Port 9000 is used by several important services. PHP-FPM (FastCGI Process Manager), the most common way to run PHP with Nginx, listens on port 9000 for FastCGI connections from the web server. SonarQube, a leading code quality and security analysis platform, uses port 9000 for its web interface. Portainer, a popular Docker management GUI, also defaults to port 9000. ClickHouse uses port 9000 for its native protocol. The variety of services using this port means proper identification is important. In PHP hosting environments, port 9000 handles PHP processing for every web request, while in DevOps environments, it might be SonarQube or Portainer.
Common Uses
- PHP-FPM FastCGI process management
- SonarQube code quality dashboard
- Portainer Docker management interface
- ClickHouse native protocol
Technical Details
Copy-paste commands to check port 9000 (PHP-FPM / SonarQube / Portainer) from your terminal
Test connectivity
nc -zv example.com 9000
curl -v --max-time 5 http://example.com:9000/
telnet example.com 9000
nmap -p 9000 -sV example.com
(echo > /dev/tcp/example.com/9000) 2>/dev/null && echo "open" || echo "closed"
Open port in firewall
sudo ufw allow 9000/tcp
sudo iptables -A INPUT -p tcp --dport 9000 -j ACCEPT
sudo firewall-cmd --permanent --add-port=9000/tcp && sudo firewall-cmd --reload
Security Considerations
PHP-FPM should never be directly accessible from the internet — it should only accept connections from the local web server (Nginx/Apache). SonarQube and Portainer provide administrative access and need strong authentication. All should be behind firewalls with restricted access. Keep all services updated for security patches.
Popular Ports Reference
The most commonly used and referenced network ports