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I just don’t understand your logic. In your mind it’s okay to make an assumption about the content of a link based off the name of the link. However, it’s not okay to make an assumption about the content of the other link and find out why the OP started the discussion. Rather, you believe it would be better to attack the OP for not explaining what their links were to your satisfaction.
Is that right?
If you’re gonna self-host you’re gonna need to learn to use a search engine. Find a tool that can be used to check what ports are open for a machine, there a several available.
I would try searching things like “Linux cli port scanner”