HTTPS Alternate / Portainer
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TCP — Web
Port Overview
What is Port 9443?
Port 9443 is a popular alternate HTTPS port used by various administrative consoles and web applications. Portainer, a popular Docker and Kubernetes management UI, uses this port for its HTTPS interface. VMware vSphere, Rancher, and various other infrastructure management tools also use port 9443 for secure web access.
Security Considerations
Port 9443 (HTTPS Alternate / Portainer) is classified as medium risk. While this service is commonly exposed, consider using encrypted alternatives where available.
Recommendation: Keep the service updated. Monitor logs for unusual activity.