To put it plainly, tunneling relies on encapsulation, which hides VPN communications on the public internet. As the name implies, it allows obfuscating and even hiding data. VPN tunneling is what VPN protocols do to establish a connection between the VPN client (app) and the serve r. So even if anyone got hold of your mail – they couldn’t read it. To protect the contents of the mail and your ID, these letters are translated into a language only you and the post office clerk can understand. As far as the receiver is concerned – the letter came from the post office and not from you (unless you signed it). They will take your letter, attach your customer ID to it, slap the post office’s address on it, and ship it. In the same way, you can ask this clerk to send a letter to anyone in the world. All this happens through a super-secret pipe that connects your house and the office.

When you receive a letter, the clerk identifies you using this ID and forwards the mail directly to you. The post office generates this ID for you and keeps it confidential.

The clerk in this office receives and sends letters containing only one piece of information about you – your customer ID. Imagine a post office that doesn’t know your first or last name or address.

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