Port 9000: Alt-9000
Port 9000 has no single fixed meaning; it is used by PHP-FPM's FastCGI listener, the SonarQube code-quality dashboard, the Portainer container UI, and various other tools by convention rather than IANA assignment. Always check what is actually bound to it on a given host.
| Port number | 9000 |
|---|---|
| Service | Common alternate app port (PHP-FPM, SonarQube, Portainer) |
| Protocol | TCP |
| Category | Web |
| Default encryption | No |
Frequently asked questions
What is port 9000 used for?
Port 9000 has no single fixed meaning; it is used by PHP-FPM's FastCGI listener, the SonarQube code-quality dashboard, the Portainer container UI, and various other tools by convention rather than IANA assignment. Always check what is actually bound to it on a given host.
Is port 9000 TCP or UDP?
Port 9000 (Alt-9000) uses TCP.
Is port 9000 secure?
Port 9000 is not encrypted by default. Where possible, use an encrypted alternative or tunnel it over TLS or a VPN.
Should I open port 9000 on my firewall?
Only if you specifically need Alt-9000. Expose it to the smallest set of trusted sources, and never open database or Windows-service ports to the whole internet.