VPN is basically encrypting and decrypting the data to be sent and received through the general public network making it unreadable to other network that donandrsquo;t have the key to decrypt the data. Making the original data to be read or received only by the proper addressee who has the key to decrypting it. The process for sending data the VPN way is first the data is encrypted meaning it is jumbled in a pattern only the receiving network or station knows. There are softwareandrsquo;s and hardwareandrsquo;s develop to implement VPN, but there is not a standard being actually followed like the standard for parallel port or serial ports in a personal computer immaterial of its manufacturer. There were many technologies or services developed to implement VPN but the most popular ones are the VPN Tunnel PPTP (Point To Point Tunneling protocol), L2TP (Layer 2 Tunneling Protocol), and VPN Secure: IPsec (Internet Protocol Security). A VPN can support the same intranet/extranet services as a traditional WAN, but VPNs have grown in popularity for their ability to support remote access service

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