Concept and classification VPN networks , their construction
VPN https://addons.mozilla.org/en-US/firefox/addon/veepn-free-fast-security-vpn/ (Engl . Virtual Private Network - virtual private network ) - a logical network created on top of the other network , such as Internet . Although at that , that communication of suschestvlyayutsya on public networks with the use of insecure protocols , for the account of encryption are closed by foreign channels sharing information . VPN enables to combine , for example , several offices of the organization of a single network with the use of a tie between them uncontrollable channels .
According to its essence VPN has a number of properties leased line , but develops it in within a public network , such as the Internet . With the help of methods of tunneling packets of data are transmitted through obsched The available network both on conventional two-point connection .