Point-to-Point Tunneling Protocol (PPTP)
has functions similar to that of PPP. However, it provides a secure
transmission of data from the remote server. In order to use PPTP, the
PPTP enabled client must dial into a PPP server and gain access to the
remote server. When the connection is established between the PPP and
PPTP servers, the PPTP server creates a connection with the client
through a process called tunneling. When a remote client sends a
transmission, the transmission goes through the PPP server, is
encrypted and then sent through the tunnel to the PPTP server. The
PPTP server receives the transmission, de-encrypts it, and directs it
to the appropriate host. These features of PPTP make secure
connections possible across the Internet. PPTP facilitates the
transfer of sensitive data: a user can log onto an ISP, use the ISP as
a gateway, and then log securely into an office network
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