Port 9090 — Prometheus / Cockpit
Quick reference for TCP/UDP port 9090, used by Prometheus / Cockpit. Includes what the service does, security guidance and related ports.
What is port 9090?
Prometheus scrape; Cockpit web UI.
What port does Prometheus / Cockpit use?
Prometheus / Cockpit listens on port 9090 by default.
Security guidance
Medium risk — open with care
Port 9090 (Prometheus / Cockpit) can safely face the internet if you keep the software up to date, restrict admin endpoints, and use TLS where possible. Audit who can reach it and watch your logs.
Related ports
Frequently asked
What is port 9090 used for?+
Port 9090 is the standard TCP/UDP port for Prometheus / Cockpit. Prometheus scrape; Cockpit web UI.
What port does Prometheus / Cockpit use?+
Prometheus / Cockpit listens on port 9090 by default.
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