Imagine an apartment building where there’s a number on your door. Today it’s 42.
There’s an index in the office that says u/gravity_shift ‘s door is 42 today. It has an index of all your neighbors too. If someone needs to find you or your neighbor, they just have to check the list.
This is like dynamic IP addresses for your LAN.
But what if we didn’t assign you a different number everyday? What if we kept the number on your door 42?
I’d be able to know which door is yours without having to check the mailroom. I wouldn’t have to write down a different address every time I’m mailed you something. It will save a little bit of time not having to look things up.
Static vs Dymanic WAN addresses are similar, but imagine instead of your apartment number, the whole buildings street address changes periodically. That makes things like hosting servers or looking at surveillance cameras remotely more complicated and require extra steps if you don’t have a static IP.
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