Most customers find a lot of value in managing their STBs via the Amino management server and so it's important that the STB is fully able to reach all modules of the server.
You can find the port requirements listed in this article: Engage DNS/IP and Port Requirements – Amino Support (aminocom.com)
But if you are installing your H200 STBs in many locations you may want to physically check the connectivity once the STB is at its final destination.
To this end, from firmware version 25.3.2022.9R we have build in a port checking application which you can run locally or via Engage (obviously if there are essential ports not open then the server may not be able to run this remotely so you may need to run it locally during installation to ensure your local I.T environment is not preventing remote access).
Below is a video which illustrates how to run the connectivity checker app.