Summarize VPNs. Include how they work, how they are configured and what function do they perform. Solution virtual private network: VPN is known as a virtual private network, it’s a private network to extend across a public internet. It allows users to receive and send information across public or shared networks as their compute plans were openly linked to the secret network. VPN attach 2 computers securely over the internet, even however to is an open network. A VPN customer on 1 computer connect to VPN server on one more computer plus through using encryption and further safety actions, no one can observe what information is been exchange A leased line or dial-up connection create a physical association to a port on isolated way in server on a secret network. Though, using leased lines to give network access is exclusive when compare to the charge of provide network access using a VPN association.