Post by Álex Córcoles (coding)

femto.pub

14h

One of the teenagers I work with is taking an interest in computers/networking. We're emailing about why you can't access home servers from outside your network, and how websites can be accessed from anywhere. Does anyone have a good analogy for LANs, private IP blocks, DNS, name servers, and accessing it all? Nothing I can come up with is a very good fit.

Edit: yes, another adult is copied on all emails. I know the CPP regulations, including the recent updates, and have passed advanced CP.

Edited 14h ago

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14h

@alexhall common analogies would be postal addresses or phone numbers. But I doubt teenagers today would be familiar with internal phone numbers.

Postal addresses might work, you could describe port forwarding as "mom gets the postcard and then hands it over to the target household member". Some people can be reached directly because the postal address is specific to them, etc.

Or set up https://yggdrasil-network.github.io/ and forget about NAT. (Only half joking.)

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