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Chapter 10. Home Networking Services > USER LOGONS TO A BROADBAND NETWORK

USER LOGONS TO A BROADBAND NETWORK

In a home networking environment, the connection to the Internet is always on. There are some providers such as telecommunication companies that provide a logon mechanism for authenticating the user. The process of authenticating a user on a home network involves the establishment of a session. The concept of sessions is already widely accepted and deployed in the telecommunications business. All Internet dial-up services rely on a protocol called the point-to-point protocol (PPP) to create a session. PPP is the Internet standard for transmission of IP packets over serial lines.

In the broadband arena, DSL and cable technology providers extend this communications model with a variation of PPP called point-to-point tunneling protocol (PPTP). Microsoft and several vendor companies, known collectively as the PPTP forum, have jointly developed this protocol. With PPTP, home networking users create a logon session every time they access the broadband network. The process of logging on to a broadband network is illustrated in Figure 10.2 and works as follows:


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