HTTPS Alternate / Portainer

Medium Risk

TCP — Web

Port Overview

Port Number 9443

Service Name HTTPS Alternate / Portainer

Transport Protocol TCP

Category Web

Security Risk Medium

Port Range Registered (1024-49151)

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.

TCP Web Commonly Used

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.

Related Ports — Web

70 Gopher 80 HTTP 81 HTTP Alternate 280 http-mgmt 443 HTTPS 808 CCProxy HTTP 843 Flash Policy 901 SWAT