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Can someone demystify computer Ports for me? Please? Blocking, unblocking, opening, allowing, VPNs and their effect, what ports are and what they do, step by step, when you have to interact with them? (lemmy.dbzer0.com)

submitted 7 months ago by Melatonin@lemmy.dbzer0.com to c/asklemmy@lemmy.ml

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It's the one thing when I'm configuring things that makes me wince because I know it will give me the business, and I know it shouldn't, but it does, every time. I have no real idea what I'm doing, what it is, how it works, so of course I'm blindly following instructions like a monkey at a typewriter.

Please guide me into enlightenment.

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[–] teawrecks@sopuli.xyz 2 points 7 months ago

Yeah, didn't want to dig deep in the interest of brevity, but I didn't want to say that specific applications use those ports, even though I already said that ports in general are for applications. You can use whatever ftp, ssh, or http server you want as long as they "speak" the expected protocol.