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vpnd(8) [osx man page]

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 appro- priate parameters. Parameters for vpnd are specified in a system configuration (plist) file in XML format. This file contains a dictionary of configurations each identified by a key referred to as a server_id. Parameters 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-. Typically, 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

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CONFIGD(8)						    BSD System Manager's Manual 						CONFIGD(8)

NAME
configd -- System Configuration Daemon SYNOPSIS
configd [-bdv] [-B bundleID] [-V bundleID] [-t bundle-path] DESCRIPTION
The configd daemon is responsible for many configuration aspects of the local system. configd maintains data reflecting the desired and cur- rent state of the system, provides notifications to applications when this data changes, and hosts a number of configuration agents in the form of loadable bundles. Each configuration agent is responsible for a well-defined aspect of configuration management. The agents look to one or more input sources (preferences, low-level kernel events, configd notifications, etc) and, through a set of policy modules, interacts with the system to estab- lish the desired operational configuration. Access to the data maintained by configd is via the SystemConfiguration.framework SCDynamicStore APIs. OPTIONS
The command line options are as follows: -b Don't actually load any bundles. -B bundleID Prevents the loading of the bundle with the specified bundleID. -d Run configd in the foreground without forking. This is useful for debugging. -v Puts configd into verbose mode. Displays debugging information about bundles as they are being loaded. -V bundleID Turns verbose mode on for the bundle with the specified bundleID. -t bundle-path Loads only the bundle specified by bundle-path. BUNDLES
At the present time, the majority of the configuration agents (or bundles) hosted by configd are used to establish and maintain the network configuration. These agents include: KernelEventMonitor This bundle is responsible for monitoring kernel events and conveying changes to the network state (e.g. link status) to other configuration agents and interested applications. InterfaceNamer This bundle provides a name to each of the system's network interfaces. The bundle queries the IOKit Registry for a list of network devices attached to the system and gives them BSD style names such as "en0". IPConfiguration This agent is responsible for establishing and maintaining IPv4 addresses on the system. These addresses may be manually specified in the network preferences or acquired using DHCP (or BOOTP). IP6Configuration This agent is responsible for establishing and maintaining IPv6 addresses on the system. IPMonitor This agent is responsible for establishing and maintaining the primary network service, the default route, the active DNS configuration, and the active network proxies on the system. LinkConfiguration This agent is responsible for establishing and maintaining the media type, media options, and MTU for ethernet interfaces. PreferencesMonitor This agent is responsible for conveying the network configuration preferences specified by the administrator to the various configuration agents (IPv4, IPv6, ...). PPPController This agent is responsible for establishing and maintaining PPP connections on the system. FILES
/System/Library/SystemConfiguration/ Directory of configd bundles /Library/Preferences/SystemConfiguration/ Default directory for system configuration persistent store files. .../preferences.plist System configuration .../NetworkInterfaces.plist Network interface --> BSD interface mappings .../VirtualNetworkInterfaces.plist Virtual network interface (VLAN) configuration ERRORS
Log messages generated by configd and any configuration agents will are sent to the system log daemon by syslog(3). The syslog facility used is LOG_DAEMON. If the -d option is specified, log messages with written to stdout (or stderr if the priority is greater than LOG_NOTICE). SIGNALS
configd was designed to run without any intervention but if you insist on sending a signal to the daemon then the following are available: SIGHUP This signal, typically used to tell a daemon to reload its configuration, is ignored (there is no configuration). SIGTERM This signal initiates a "graceful" shutdown of the daemon. SEE ALSO
scutil(8), scselect(8) HISTORY
The configd daemon appeared in Mac OS X Public Beta. NOTES
Unless started with the -d option, configd will register with launchd(8) such that the daemon will be restarted in the event of a crash. This registration will be removed during "graceful" shutdowns of the daemon. This daemon and its current behavior may change without notice. Do not rely on its existence or its behavior. Consider it an unsupported command. Mac OS X June 18, 2009 Mac OS X
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