Documentation forServer & Application Monitor
Monitoring your applications and environment is a key capability of Hybrid Cloud Observability and is also available in a standalone module, Server & Application Monitor (SAM). Hybrid Cloud Observability and SAM are built on the self-hosted SolarWinds Platform.

SolarWinds Platform server-Initiated (Passive) Communication

With passive communication, the agent waits for requests from the server on the default port of 17790. (This can be changed if needed.) This port must be opened on the agent computer's firewall so the server can connect. No change to the server firewall is required.