запускается, выключается или выводит журнал подключений PPP  (starts up, shuts down or lists the log of PPP connections)
  
Имя (Name)
pon, poff, plog - starts up, shuts down or lists the log of PPP
       connections
Синопсис (Synopsis)
pon [ isp-name [ options ] ]
       poff [ -r ] [ -d ] [ -c ] [ -a ] [ -h ] [ isp-name ]
       plog [ arguments ]
Описание (Description)
This manual page describes the pon, plog and poff scripts, which
       allow users to control PPP connections.
   pon
       pon, invoked without arguments, runs the /etc/ppp/ppp_on_boot
       file, if it exists and is executable. Otherwise, a PPP connection
       will be started using configuration from /etc/ppp/peers/provider.
       This is the default behaviour unless an isp-name argument is
       given.
       For instance, to use ISP configuration "myisp" run:
              pon myisp
       pon will then use the options file /etc/ppp/peers/myisp.  You can
       pass additional options after the ISP name, too.  pon can be used
       to run multiple, simultaneous PPP connections.
   poff
       poff closes a PPP connection. If more than one PPP connection
       exists, the one named in the argument to poff will be killed,
       e.g.
              poff myprovider2
       will terminate the connection to myprovider2, and leave the PPP
       connections to e.g. "myprovider1" or "myprovider3" up and
       running.
       poff takes the following command line options:
              -r     causes the connection to be redialed after it is
                     dropped.
              -d     toggles the state of pppd's debug option.
              -c     causes pppd(8) to renegotiate compression.
              -a     stops all running ppp connections. If the argument
                     isp-name is given it will be ignored.
              -h     displays help information.
              -v     prints the version and exits.
              If no argument is given, poff will stop or signal pppd if
              and only if there is exactly one running. If more than one
              connection is active, it will exit with an error code of
              1.
   plog
       plog shows you the last few lines of /var/log/ppp.log. If that
       file doesn't exist, it shows you the last few lines of your
       /var/log/syslog file, but excluding the lines not generated by
       pppd.  This script makes use of the tail(1) command, so arguments
       that can be passed to tail(1) can also be passed to plog.
       Note: the plog script can only be used by root or another system
       administrator in group "adm", due to security reasons. Also, to
       have all pppd-generated information in one logfile, that plog can
       show, you need the following line in your /etc/syslog.conf file:
       local2.*       -/var/log/ppp.log
Файлы (Files)
/etc/ppp/options
              PPPd system options file.
       /etc/ppp/pap-secrets
              System PAP passwords file.
       /etc/ppp/chap-secrets
              System CHAP passwords file.
       /etc/ppp/peers/
              Directory holding the peer options files. The default file
              is called provider.
       /etc/chatscripts/provider
              The chat script invoked from the default
              /etc/ppp/peers/provider.
       /var/log/ppp.log
              The default PPP log file.