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The serial line protocols, SLIP and PPP, provide the Internet
connectivity for the poor. Apart from a modem and a serial board
equipped with a FIFO-buffer, no hardware is needed. Using it is not much
more complicated than a mailbox, and an increasing number of private
organizations offer dial-up IP at an affordable cost to everyone.
There are both SLIP and PPP drivers available for . SLIP
has been there for quite a while, and works fairly reliable.
A PPP driver has been developed recently by Michael Callahan and
Al Longyear. It will be described in the next chapter.
Thu Mar 7 23:22:06 EST 1996