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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 8 months ago by [email protected] to c/[email protected]

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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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[–] [email protected] 1 points 8 months ago

There are ranges of addresses that are reserved for local (non internet) network devices, such as my example IP address - 192.168.1.100

I just wanted to add that in some cases, the devices on your home network will have a public IP. For example, IPv6 uses a different public IP for each device on the network. You still need a router in that case, since your system still needs to know how to reach another network such as the internet.