Virtual
Private Network (VPN)
Virtual Private Network, VPN represents secure interconnection of private
networks (ie of individual offices of an organization) via the Internet.
Traffic between both networks (so called tunnel) is encrypted. This protects
networks from tapping.
A VPN gives a company the same capabilities as a
system of owned or leased lines to which that company has exclusive access.
However, costs are much lower because the VPN uses the shared public infrastructure
rather than exclusive line access.