Serial Line IP

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.

• General Requirements
• SLIP Operation
• Using dip
  • A Sample Script
  • A dip Reference
    • The Modem Commands
    • echo and term
    • The get Command
    • The print Command
    • Variable Names
    • The if and goto Commands
    • send, wait and sleep
    • mode and default
• Running in Server Mode