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Chapter 17. NETWORKING ON THE RUN > Understanding Access Protocols

Understanding Access Protocols

For the dial-up connection to work between the remote client and the RAS server, a protocol must be used that takes the data packets exchanged between the client and the server and encapsulates them for movement over the POTS network. Encapsulation is just a fancy term for taking a particular frame type (such as an Ethernet frame) and placing it in a sort of electronic baggy. The frames can then move across the alien public phone network and still maintain their integrity as a particular frame type.

This electronic bagging or encapsulation of frames for movement across the phone network is handled by an access protocol. Two common access protocols are SLIP and PPP.


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