Most users do not have a network card in their computer, so in order for them
to access the Internet or other machines they require a protocol that will
work over connection they already have. Linux is designed to use low level
PPP (Point to Point Protocol), SLIP (Serial Line Internet Protocol) drivers
over direct serial links or modem connections, and PLIP (Parallel Line
Internet Protocol) drivers over a parallel (Laplink-style) cable. RedHat software uses a different method of configuration from that of other
Linux distributions and uses a different configuration method.
Note the RedHat PPP module does not support the command line options of netconf.