Kiltak found this. All data on the Internet–or any network–is divided up into thousands of little chunks that network geeks call packets. Each packet has the piece of data they’re trying to carry as well as destination and routing information it needs to get where it’s going. 

Even so, exactly how a packet gets from point A to point B on a network as massive as the Internet is still something of a mystery even to network administrators.

So that’s where this really well done article comes in. Don Parker of Security Focus wrote it as a tutorial showing what happens to a packet on the Internet and how it gets to where it’s going. If you’ve got any interest in how the Internet works, it’s defintely worth a read.

(via Geeks Are Sexy)