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Q.
What is PPTP ?
The Point-to-Point Tunneling Protocol ( PPTP )
encapsulates Point-to-Point Protocol ( PPP
) frames into IP datagrams for transmission over an IP-based
internetwork. TCP connection ( port 1723 ) is used for tunnel
maintenance and GRE ( Protocol 47 ) is used to encapsulate
PPP frames for tunneled data. User name and password are used
for authentication. Besides, Microsoft provides MPPE for data
encryption. |
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Page last modified : 13 October 2008 |