Encapsulation

• Encapsulation is the result of what happens when you combine layers and packet switching.
• Encapsulation allows you to layer recursively
• Encapsulation is how we take protocol layers and assemble them into packets in a way that’s flexible and maintains their separation of concerns.

VPN

• You open a secure connection to a network you trust, using Transport Layer Security.
• When you communicate with the Internet and send IP packets, rather than send them normally, you send them inside the VPN connection.
• So the IP packets go to your office network.
• Then the office network can route them normally.