Heartbeat monitoring (reverse monitoring) enables you to monitor your internal services that are not publicly accessible (for example due to security reasons). You may ask “How is this possible”? This can be accomplished by sending us simple HTTP GET request to our unique heartbeat URL. You periodically send us those “pings” as long as your application is healthy. You can use tools like curl or wget for this in combination with Crontab on Linux or Task scheduler on Windows (to run them periodically).