eli5 What is the darknet and how does it work?

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I am finding a lot of stuff telling me the darkweb is an “overlay network” meaning it is built on top of another network. What? How?

Sincerely,
An idiot

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5 Answers

Anonymous 0 Comments

OK. First off lets talk about what the internet actually is.

The internet is a network of networks. It’s a series of computer networks, and those networks are themselves all connected together. To accomplish this goal computers send messages much like an old fashioned letter. An old fashioned letter has an address saying where the letter is going to, and a return address saying where the message is from. Both of those addresses are visible to anyone, without them having to open the letter. If you don’t know what an old fashioned letter looks like… I can’t help you.

So back to the internet. If we want a communication to be secret, we can encrypt it. That prevents people from being able to read what’s inside the letter. BUT it does not prevent people from tracking who is sending letters to who, because all that information is written on the outside of the letter. Encrypting who is sending information to who is really complicated because then how would the postal service know how to deliver the letter.

The “dark web” is a way of getting around this problem. Encryption does nothing to prevent someone from seeing who is sending data to who.

So lets say that my friend and I want to be able to send secret letters without anyone knowing who is sending letters to who. What we do is we contact a third party (for example, a UPS store). By friend and I both send letters to the UPS store. The outside of the envelopes contain the address of the UPS store as the destination, and our own address as the return address. So it’s a legal and proper letter that the postal system will handle.

At the UPS store, they receive our envelopes and open them. What they find inside is… another envelope! This second envelope is a properly addressed letter, with the return address being the UPS store itself. The UPS store opens the initial envelope, finds the second envelope then drops it back in the mail.

So to anyone who’s intercepting our mail (but not opening it). It’s impossible to tell that my friend and I are mailing letters to one another through the UPS store. The UPS store knows, but they don’t keep records of every message that passes through. So in any given moment they can tell who’s mailing who, but no one who’s only looking at that days mail can tell.

So, to recap. I write a letter to my friend, put it in an envelope. That envelope has my friends address on it and the UPS store as the return address. I then put that envelope into a second envelope with my return address on it and the UPS store as the destination.

NOW lets add another layer of UPS stores. SO now I send an envelope to the UPS store, inside that envelope is another envelope addressed to a different UPS store. Inside that envelope is another envelope addressed to my friend.

SO now with this double UPS store method we have finally created a system where no one who’s working at the post office can figure out whos sending letters to who.

That’s what the dark web does. It uses the normal internet, just like the example is using the normal postal service. But the nodes (UPS stores) are just forwarding traffic, they can’t see the contents of the letters. The UPS stores can’t even tell who is sending the letters because they always just come from another UPS store.

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