Serial Line Interface Protocol and Point-to-Point Protocol

A network adapter card attaches your computer to a network, and that card gets assigned an IP address. If you want to connect to the Internet using a dial-up modem, then you don't need a network card on your computer, just the modem. In that case, communications can be handled between your modem (a serial connection) and your Internet service provider (ISP) by using serial line interface protocol (SLIP) or point-to-point protocol (PPP).

The Serial Line Interface Protocol

SLIP is an older protocol developed to allow a serial line data exchange between two computers. SLIP is not used very much now because it is a very simple protocol and provides for no authentication. SLIP has, for all ...

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