Point-to-Point Tunneling Protocol (PPTP) is a new technology for creating Virtual Private Network (VPN). It is a protocol (set of communication rules) that allows corporations to extend their own corporate network through private “tunnels” over the public Internet. A corporation uses a wide-area network as a single local area network and it no longer needs to lease its own lines for wide-area communication but can securely use the public networks. This kind of interconnection is known as a virtual private network (VPN).

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