An external agent listening port has been added in SMA 11.0 to more securely allow customers to expose only agent traffic publicly. This feature is always on and not configurable. It allows customers to perform re-routing of agent traffic from port 443 on a public interface to port 52230 on the SMA. This article describes the feature in more detail and explains caveats.
For more details about properly securing an SMA deployment, see Best Practices for Securing your SMA.
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