vpnd(8) BSD System Manager's Manual vpnd(8)
NAME
vpnd -- Mac OS X VPN service daemon
SYNOPSIS
vpnd [-d | -n | -x] [-i server_id]
vpnd [-h]
DESCRIPTION
vpnd allows external hosts to tunnel via L2TP over IPSec or via PPTP from
an insecure external network (such as the Internet) into a "secure"
internal network, such as a corporate network. All traffic through the
tunnel is encrypted to provide secure communications, with L2TP/IPSec
providing a higher level of security than PPTP.
vpnd listens for incoming connections, pairs each one with an available
internal IP address, and passes the connection to pppd(8) with appropri-
ate parameters. Parameters for vpnd are specified in a system configura-
tion (plist) file in XML format. This file contains a dictionary of con-
figurations each identified by a key referred to as a server_id. Parame-
ters include the tunneling protocol, IP addresses to be assigned to
clients, PPP parameters etc.
vpnd is launched for a particular configuration by using the -i option
which takes the server_id to be run as an argument. vpnd can also be run
without the -i option. In this case it will check the configuration file
for a special array which contains a list of configurations to be run and
will fork and exec a copy of vpnd for each server_id to be run. Running
multiple vpnd processes simultaneously for a particular protocol is not
allowed.
vpnd will be launched during the boot process by a startup item if the
field VPNSERVER is defined in /etc/hostconfig with the value -YES-. Typ-
ically, in this case it will be launched without the -i option and will
check the configuration file to determine which configuration(s) are to
be run.
vpnd logs items of interest to the system log. A different log path can
be specified in the configuration file.
OPTIONS
The following options are available:
-d Do not move to background and print log strings to the terminal.
-h Print usage summary and exit.
-i Server_id in the plist file that defines the configuration to be
run.
-n Do not move to background, print log information to the terminal,
and quit after validating the argument list.
-x Do not move to background.
EXAMPLES
The default invocation,
vpnd
will read the list of configurations to run from the configuration file
and launch them. This default configuration may be enabled at startup by
defining VPNSERVER to -YES-.
To specify a particular configuration to run use
vpnd -i server_id
FILES & FOLDERS
/usr/sbin/vpnd
/etc/hostconfig
/System/Library/StartupItems/NetworkExtensions
/Library/Preferences/SystemConfiguration/com.apple.RemoteAccessServers.plist
SEE ALSO
pppd(8) vpnd(5)
Mac OS X 21 August 2003 Mac OS X
Mac OS X 10.7 - Generated Sun Sep 4 19:20:42 CDT 2011