How does a VPN work?

A VPN (Virtual Private Network) is a service that allows you to create a secure connection to another network over the internet. This is done by using a protocol that encrypts the data that you are sending, and another protocol that decrypts the data that you are receiving. The two protocols work together to ensure that the data that you are sending cannot be seen by anyone except the person you are communicating with. This makes it a great tool for people who are trying to stay anonymous online, or those who are concerned about their privacy.