A better explanation/metaphor is using the mail. You can send letters to/from the mailbox, and in there if someone was watching your mailbox, they could see the mail you are sending or receiving.
But if you sign up for a P.O. Box, you use that address for sending and receiving. Carrying your mail to/from the P.O. Box is like the VPN. Dumping the mail in a postbox mixes the mail, so no one would know what mail was yours without breaking into the Post Office.
Latest Answers