pptpd --version (return code: 0)
pptpd v1.4.0
pptpd --help (return code: 0)
pptpd v1.4.0
Usage: pptpd [options], where options are:
[-b] [--bcrelay if] Use broadcast relay for broadcasts coming from.
the specified interface (default is eth1).
[-c] [--conf file] Specifies the config file to read default
settings from (default is /etc/pptpd.conf).
[-d] [--debug] Turns on debugging (to syslog).
[-e] [--ppp file] Use alternate pppd binary, default /usr/sbin/pppd.
[-f] [--fg] Run in foreground.
[-h] [--help] Displays this help message.
[-i] [--noipparam] Suppress the passing of the client's IP address
to PPP, which is done by default otherwise.
[-l] [--listen x.x.x.x] Specifies IP of local interface to listen to.
[-o] [--option file] Specifies the PPP options file to use
(default is /etc/ppp/options).
[-p] [--pidfile file] Specifies the file to write the process ID to
(default is /var/run/pptpd.pid).
[-s] [--speed baud] Specifies the baud speed for the PPP daemon
(default is 115200).
[-t] [--stimeout seconds] Specifies the timeout for the first packet. This is a DOS protection
(default is 10).
[-v] [--version] Displays the pptpd version number.
[-w] [--logwtmp] Update wtmp as users login.
[-C] [--connections n] Limit on number of connections.
[-D] [--delegate] Delegate IP allocation to pppd.
Logs and debugging go to syslog as DAEMON.
Command line options will override any default settings and any settings
specified in the config file (default config file: /etc/pptpd.conf).