The PPP daemon has several sets
of configuration options for fine-tuning PPP communications. The
sets include over eighty different selections that affect daemon
management, communications, link management, Internet Protocol,
authentication, encryption, compression, logging and signaling.
pppd running on most links is
basic and defined by a handful of options, but each daemon can be
remarkably different with a minor change of options.
This section presents some of the more common and useful pppd
command line options. Most, like the active, passive and idle timer
options, control some aspect of link management. One important
pppd option, filter, is discussed
at length in the section on security in Chapter 5. Beyond this
discussion of options for link management are short sections on
synchronous PPP connections, PPP supported compression options,
and IP address assignment.
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