ABSTRACT
VPN technology uses encryption to ensure that communication remains confidential all data is encrypted before being sent from the employee's device to the server at the employer's site and all data is encrypted before being sent from the server at the employer's site to the employee's device. When a packet comes back from the destination, routers on the corporate network forward the packet to the VPN server, which sends the packet back to the employee's device. To complete the illusion of being directly attached to the corporate network, VPN software on the employee's device must provide a way to obtain a corporate IP address. The major difference between letters sent through the people relative and packets sent through a VPN server is that an inner packet is encrypted when it travels between the employee's device and the VPN server. VPNs use encryption to ensure that no outsiders can eavesdrop on communication between the employee's device and the VPN server.
