Provide a brief overview of the steps to make a VPN work.
What will be an ideal response?
To make a VPN work, you need VPN software installed on your local machine-say a laptop at the Denver airport-and VPN software or hardware at your office. You connect your laptop first to the Internet using the airport DHCP and all that; it is just a normal Internet connection. Second, the VPN software creates a virtual NIC on your laptop (endpoint 1), makes a connection with the VPN server at the office (endpoint 2), and then, in essence, creates a virtual direct cable from the virtual NIC to the office. That "virtual cable" is called a VPN tunnel. The laptop now has two IPv4 addresses. One is local from the airport DHCP server. The other is "local," but works with the office network. That second IP address goes with the virtual NIC.
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