vpnd(5) BSD File Formats Manual vpnd(5)NAMEvpnd — Mac OS X VPN Remote Access Server File
DESCRIPTION
This manual page describes the configuration elements contained in the
/Library/Preferences/SystemConfiguration/com.apple.RemoteAccessServers.plist
file. Should this file not be present on the target OS X System, a tem‐
plate file has been provided in this manual page.
The user can manipulate the contents of this file using a PLIST file edi‐
tor (provided with any Mac OS X system), or any text editor. In this
case, the user is assumed to have some basic understanding of Property
Lists, and how to manipulate them.
The goal of this page is to provide documentation on this configuration
file's database structure and data fields, to facilitate the configura‐
tion and deployment of L2TP or PPTP VPN Servers by invoking vpnd without
specifying any specific server profile.
/ActiveServers
Lists the server identifiers that are currently available for use. These
servers will be started in the abscense of vpnd-i <server_id> parameter.
/Servers
Defines the following dictionaries: DNS, IPv4, Interface, PPP, Radius,
Server (common); IPSec, L2TP (for L2TP tunnels only)
/Servers/<server_id>
Indicates a user-defined named VPN profile configuration, identified with
the <server_id> parameter defined in vpnd(8)
There are 2 default server configurations available: com.apple.ppp.l2tp
and com.apple.ppp.pptp
/Server/<server_id>/DNS
Contains two Arrays of Strings:
OfferedSearchDomains - which lets the server specify what DNS domain(s) a
VPN client should belong to
OfferedServerAddresses - which specify the primary and (optional) sec‐
ondary DNS servers a VPN client will use to resolve FQDN's.
/Servers/<server_id>/IPv4
Contains 4 arrays of Strings, and one String:
DestAddressRanges - which specifies the start and end IP addresses range.
The Server will give an IP address to a connecting PPP-VPN client after
the successful negotiation of IPCP from this range.
OfferedRouteAddresses - which lists the network address(es) to each route
the Server will serve to any connecting VPN client.
OfferedRouteMasks - which lists the network mask(s) to each route the
Server will serve to any connecting VPN client.
OfferedRouteTypes - which lists the attribute flag(s) to each route the
Server will serve to any connecting VPN client. Valid types include:
Public - VPN Client will forward traffic destined to VPN subnet to its
Public interface.
Private - VPN Client will forward traffic destined to VPN subnet to its
Private interface.
Default value is Public.
ConfigMethod - The method through which a VPN IP interface will configure
its IP address; default value is "Manual".
/Servers/<server_id>/Interface
- Specifies the VPN interface's base type: PPP or IPSec and, its sub‐
type: L2TP or PPTP
/Server/<server_id>/PPP
- Defines Parameters necessary for PPP protocol negotiations for success‐
ful VPN functionality.
AuthenticatorACLPlugins - Access Control List that determines if a given
user accounts has sign-on priviledges to the VPN server.
AuthenticatorPlugins - An optional plug-in used to authenticate local
users with an account on the target server. Used in conjunction with
OpenDirectory/DirectoryServices facilities.
AuthenticatorEAPPlugins - User authentication using EAP protocol, with
Digital Certificates. L2TP VPN uses Kerberos "EAP-KRB" certificates or
RSA "EAP-RSA" SecurID tokens; PPTP VPN uses RSA SecurID tokens only.
AuthenticatorProtocol - Protocol(s) in use for carrying out PPP authenti‐
cation. Valid values are "MSCHAP", "MSCHAPv2", "PAP", "EAP"
ACSPEnabled - Enable/Disable ACSP protocol, which passes DHCP-like mes‐
sages from VPN client to server; used mostly to convey static routes from
server to client and DNS domains.
DisconnectOnIdle - Enable/Disable flag for PPP Connection Idling. If
Enabled, PPP connection will terminate after not seeing any application
data going through the VPN interface.
DisconnectOnIdleTimer - Time to wait (in seconds) before PPP connection
goes down without any data passing through the VPN interface.
IPCPCompressionVJ - Enable/Disable IPCP Van-Jacobson Compression Algo‐
rithm. Recommended setting is Disable(0).
LCPEchoEnabled - Enable/Disable Link Control Protocol (LCP) Echoing fea‐
ture.
LCPEchoFailure - Number of LCP Echo Requests sent without any response
from the PPP peer before declaring PPP link failure (and subsequent tear‐
down)
LCPEchoInterval - Time interval in seconds elapsed between consecutive
LCP Echo Requests sent to the PPP peer.
LogFile - VPN log file for PPP
VerboseLogging - Enables/Disables extra logging within PPP
CCPEnabled (PPTP only) - Enables/Disables CCP negotiation for PPP;
default value is true(1)
CCPProtocols (PPTP only) - List of protocols supported by CCP layer;
default value is "MPPE"
MPPEKeySize128 (PPTP only) - Enables/Disables MPPE 128-bit encryption
algorithm; default value is true(1)
MPPEKeySize40 (PPTP only) - Enables/Disables MPPE 40-bit encryption algo‐
rithm; default value is false(0)
Note: The previous 2 settings are not necessarily mutually-exclusive!
The 2 PPP peers will attempt to negotiate to the strongest encryption
policy, whenever possible.
/Servers/<server_id>/Radius
- Contains an Array with 2 Dictionaries. The entries are Radius servers
that a VPN server must authenticate a client user against before complet‐
ing the PPP negotiation. Each entry indicates the server's IP address,
and the shared secret key used for the RADIUS AAA exchange between said
server and the VPN server. The first Array entry indicates primary
server, the other is secondary server.
/Servers/<server_id>/Server
- Contains VPN server parameters
LogFile - VPN log file for PPP
VerboseLogging - Enables/Disables extra logging within PPP
MaximumSessions - maximum number of simultaneous VPN tunnel sessions
active on the VPN server. This setting is now deprecated; the VPN sub‐
net determines the maximum number of sessions.
LoadBalancingEnabled (L2TP only) - Enable/Disable load balancing feature
for L2TP VPN. This feature allows a collection of L2TP VPN servers on a
common LAN segment to share a common "virtual" address. A L2TP client
can specify this virtual address to connect to the server. The server
within the collection that "owns" the virtual address will then redirect
the initial L2TP request message to the "least busy" server within the
collection (which can include the redirecting VPN server!)
LoadBalancingAddress (L2TP only) - L2TP load-balancing virtual IP address
/Servers/<server_id>/IPSec
- L2TP only; L2TP VPN tunnels are secured using IPSec transport mode,
with IKEv1 negotiation. The following parameters configure the ISAKMP
Security Association required to run this type of IPSec Security Associa‐
tion.
AuthenticationMethod - the method for IKE authentication; default value
is "SharedSecret"
IdentifierVerification - Used during IKE negotiation; default value set
to "NONE"
LoadCertificate - X.509/PKI Certificate binary data
LocalIdentifier - String identifying the local IPsec entity; not used for
L2TP VPN.
RemoteIdentifier - String identifying the remote IPsec entity; not used
for L2TP VPN.
SharedSecret - Shared secret String known between the negotiating L2TP
peers.
SharedSecretEncryption - Indicates where L2TP secret key information is
stored. If set to "Keychain", the SharedSecret key value points to the
shared secret key stored in the Keychain. If absent, SharedSecret value
is to taken explicitly
/Servers/<server_id>/L2TP/Transport
- Defines the underlying transport protocol for L2TP; default value is
IPSec
TEMPLATE CONFIGURATION FILE
To properly extract this file, run the following command: man 5 vpnd |
col -b > com.apple.RemoteAccessServers.plist and cut out the non-XML text
from the file then copy the file to the proper directory.
---- CUT HERE ----
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>ActiveServers</key>
<array>
<string>com.apple.ppp.l2tp</string>
<string>com.apple.ppp.pptp</string>
</array>
<key>Servers</key>
<dict>
<key>com.apple.ppp.l2tp</key>
<dict>
<key>DNS</key>
<dict>
<key>OfferedSearchDomains</key>
<array>
<string>Replace with DNS search domain(s) - remove if not needed</string>
</array>
<key>OfferedServerAddresses</key>
<array>
<string>Replace with IPv4 DNS server address(es) - remove if not needed</string>
</array>
</dict>
<key>IPSec</key>
<dict>
<key>AuthenticationMethod</key>
<string>SharedSecret</string>
<key>IdentifierVerification</key>
<string>None</string>
<key>LocalCertificate</key>
<data></data>
<key>LocalIdentifier</key>
<string></string>
<key>RemoteIdentifier</key>
<string></string>
<key>SharedSecret</key>
<string>com.apple.ppp.l2tp</string>
<key>SharedSecretEncryption</key>
<string>Keychain</string>
</dict>
<key>IPv4</key>
<dict>
<key>ConfigMethod</key>
<string>Manual</string>
<key>DestAddressRanges</key>
<array>
<string>Replace with Starting VPN address - IPv4 address</string>
<string>Replace with End VPN address - IPv4 address</string>
</array>
<key>OfferedRouteAddresses</key>
<array>
<string>Replace with Offered Routes addresses - remove if not needed</string>
</array>
<key>OfferedRouteMasks</key>
<array>
<string>Replace with Offered Route Masks - remove if not needed</string>
</array>
<key>OfferedRouteTypes</key>
<array>
<string>Replace with Offered Route Type(s) - remove if not needed</string>
</array>
</dict>
<key>Interface</key>
<dict>
<key>SubType</key>
<string>L2TP</string>
<key>Type</key>
<string>PPP</string>
</dict>
<key>L2TP</key>
<dict>
<key>Transport</key>
<string>IPSec</string>
</dict>
<key>PPP</key>
<dict>
<key>ACSPEnabled</key>
<integer>1</integer>
<key>AuthenticatorACLPlugins</key>
<array>
<string>DSACL</string>
</array>
<key>AuthenticatorEAPPlugins</key>
<array>
<string>EAP-KRB</string>
</array>
<key>AuthenticatorPlugins</key>
<array>
<string>DSAuth</string>
</array>
<key>AuthenticatorProtocol</key>
<array>
<string>MSCHAP2</string>
</array>
<key>DisconnectOnIdle</key>
<integer>1</integer>
<key>DisconnectOnIdleTimer</key>
<integer>7200</integer>
<key>IPCPCompressionVJ</key>
<integer>0</integer>
<key>LCPEchoEnabled</key>
<integer>1</integer>
<key>LCPEchoFailure</key>
<integer>5</integer>
<key>LCPEchoInterval</key>
<integer>60</integer>
<key>Logfile</key>
<string>/var/log/ppp/vpnd.log</string>
<key>VerboseLogging</key>
<integer>1</integer>
</dict>
<key>Radius</key>
<dict>
<key>Servers</key>
<array>
<dict>
<key>Address</key>
<string>Replace with Primary Server IPv4 Address</string>
<key>SharedSecret</key>
<string>Replace with Server Shared Secret string</string>
</dict>
<dict>
<key>Address</key>
<string>Replace with Secondary Server IPv4 Address</string>
<key>SharedSecret</key>
<string>Replace with Secondary Server Shared Secret string</string>
</dict>
</array>
</dict>
<key>Server</key>
<dict>
<key>LoadBalancingAddress</key>
<string>Replace with IPv4 address</string>
<key>LoadBalancingEnabled</key>
<integer>0</integer>
<key>Logfile</key>
<string>/var/log/ppp/vpnd.log</string>
<key>MaximumSessions</key>
<integer>128</integer>
<key>VerboseLogging</key>
<integer>1</integer>
</dict>
</dict>
<key>com.apple.ppp.pptp</key>
<dict>
<key>DNS</key>
<dict>
<key>OfferedSearchDomains</key>
<array>
<string>Replace with DNS search domain(s) - remove if not needed</string>
</array>
<key>OfferedServerAddresses</key>
<array>
<string>Replace with IPv4 DNS server address(es) - remove if not needed</string>
</array>
</dict>
<key>IPv4</key>
<dict>
<key>ConfigMethod</key>
<string>Manual</string>
<key>DestAddressRanges</key>
<array>
<string>Replace with Starting VPN address - IPv4 address</string>
<string>Replace with End VPN address - IPv4 address</string>
</array>
<key>OfferedRouteAddresses</key>
<array>
<string>Replace with Offered Routes addresses - remove if not needed</string>
</array>
<key>OfferedRouteMasks</key>
<array>
<string>Replace with Offered Route Masks - remove if not needed</string>
</array>
<key>OfferedRouteTypes</key>
<array>
<string>Replace with Offered Route Types - remove if not needed</string>
</array>
</dict>
<key>Interface</key>
<dict>
<key>SubType</key>
<string>PPTP</string>
<key>Type</key>
<string>PPP</string>
</dict>
<key>PPP</key>
<dict>
<key>ACSPEnabled</key>
<integer>1</integer>
<key>AuthenticatorACLPlugins</key>
<array>
<string>DSACL</string>
</array>
<key>AuthenticatorEAPPlugins</key>
<array>
<string>EAP-RSA</string>
</array>
<key>AuthenticatorPlugins</key>
<array>
<string>DSAuth</string>
</array>
<key>AuthenticatorProtocol</key>
<array>
<string>MSCHAP2</string>
</array>
<key>CCPEnabled</key>
<integer>1</integer>
<key>CCPProtocols</key>
<array>
<string>MPPE</string>
</array>
<key>DisconnectOnIdle</key>
<integer>1</integer>
<key>DisconnectOnIdleTimer</key>
<integer>7200</integer>
<key>IPCPCompressionVJ</key>
<integer>0</integer>
<key>LCPEchoEnabled</key>
<integer>1</integer>
<key>LCPEchoFailure</key>
<integer>5</integer>
<key>LCPEchoInterval</key>
<integer>60</integer>
<key>Logfile</key>
<string>/var/log/ppp/vpnd.log</string>
<key>MPPEKeySize128</key>
<integer>1</integer>
<key>MPPEKeySize40</key>
<integer>0</integer>
<key>VerboseLogging</key>
<integer>1</integer>
</dict>
<key>Radius</key>
<dict>
<key>Servers</key>
<array>
<dict>
<key>Address</key>
<string>Replace with Primary Server IPv4 Address</string>
<key>SharedSecret</key>
<string>Replace with Primary Server Shared Secret string</string>
</dict>
<dict>
<key>Address</key>
<string>Replace with Secondary Server IPv4 Address</string>
<key>SharedSecret</key>
<string>Replace with Secondary Server Shared Secret string</string>
</dict>
</array>
</dict>
<key>Server</key>
<dict>
<key>Logfile</key>
<string>/var/log/ppp/vpnd.log</string>
<key>MaximumSessions</key>
<integer>128</integer>
<key>VerboseLogging</key>
<integer>1</integer>
</dict>
</dict>
</dict>
</dict>
</plist>
---- CUT HERE ----
SEE ALSOvpnd(8)Mac OS X 17 August 2009 Mac OS X
