The communication will be through a serial port. On the server
we will connect through the "/dev/ttyS1" (COM2 in DOS/Windows)
device. On your computer this may be different and you should
modify the examples below accordingly. I force authentication
because I use the configuration to provide a way to access files
on a file server for a group of people. After logon they can use
the Samba file shares to copy files to and from a laptop. If you
are not concerned with security you can comment out the relevant
options. PPP (Point-to-Point Protocol) communication provides
TCP/IP across a serial link. In other words: when you want to do
internet-based browsing through a modem, you are likely to be
using it. In Linux PPP is implemented by the PPP daemon "pppd".
Its configuration is done through files in the "/etc/ppp/"
directory. We will be using the following files:
/etc/ppp/options contains all general options for PPP
connections contains PPP options specific to connections through
"/dev/ttyS1" contains authenticati