Ipsec For Mac

Here is an instruction how to connect to a VPN Gate Public VPN Relay Server by using L2TP/IPsec VPN Client which is built-in on Mac OS X. On this instruction, every screen-shots are taken on Mac OS X Mountain Lion. Other versions of Mac OS X are similar to be. This thin design, IPSec implementation is available via Cisco.com for use with any Cisco central site remote access VPN product and is included free of charge with the Cisco VPN 3000 Concentrator.

  • The WatchGuard IPSec VPN Client is a premium service that gives both the organization and its remote employees a higher level of protection and a better VPN experience. Compatible with Windows and Mac OS X, the IPSec VPN is the ideal solution for employees who frequently work remotely or require remote access to sensitive resources.
  • The client configuration described here is for a Mac OS X 10.8.2 (Mountain Lion). However, the configuration would be similar in other Mac OS X versions. The names server and client certificates are used in order to distinguish between the certificates used in the SonicWall (server) and the Mac OS X L2TP/IPsec client (client).

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Table of contents
Ipsec For Mac
  1. 1.1. Initial configurations (only once at the first time)
  2. 2.2. Start a VPN connection
  3. 3.3. Enjoy VPN communication

Here is an instruction how to connect to a VPN Gate Public VPN Relay Server by using L2TP/IPsec VPN Client which is built-in on Mac OS X.

On this instruction, every screen-shots are taken on Mac OS X Mountain Lion. Other versions of Mac OS X are similar to be configured, however there might be minor different on UIs.

These screen-shots are in English version of Mac OS X. If you use other language, you can still configure it easily by referring the following instructions.

1. Initial configurations (only once at the first time)

Click the network icon on the top-right side on the Mac screen. Click 'Open Network Preferences..' in the menu.

Ipsec

Click the '+' button on the network configuration screen.

Vpn for mac apple. Select 'VPN' as 'Interface' , 'L2TP over IPsec' as 'VPN Type' and click the 'Create' button.

A new L2TP VPN configuration will be created, and the configuration screen will appear.

On this screen, you have to specify either hostname or IP address of the destination SoftEther VPN Server.

After you specified the 'Server Address' , input the user-name on the 'Account Name' field, which is the next to the 'Server Address' field.

Next, click the 'Authentication Settings..' button.

The authentication screen will appear. Input your password in the 'Password' field. Specify the pre-shared key also on the 'Shared Secret' field. After you input them, click the 'OK' button.

After return to the previous screen, check the 'Show VPN status in menu bar' and click the 'Advanced..' button.

Moshi for mac. The advanced settings will be appeared. Check the 'Send all traffic over VPN connection' and click the 'OK' button.

On the VPN connection settings screen, click the 'Connect' button to start the VPN connection.

2. Start a VPN connection

You can start a new VPN connection by clicking the 'Connect' button at any time. You can also initiate a VPN connection by clicking the VPN icon on the menu bar.

After the VPN connection will be established, the VPN connection setting screen will become as below as the 'Status' will be 'Connected' . Your private IP address on the VPN, and connect duration time will be displayed on the screen.

3. Enjoy VPN communication

While VPN is established, all communications will be relayed via the VPN Server. You can access to any local servers and workstation on the destination network.

  • Table of contents
  • strongSwan on Mac OS X
    • MacPorts, Building from the Git repository

Since strongSwan 4.3.4 the IKE daemon charon runs on macOS.

With 5.1.0 most limitations of earlier releases have been resolved. For instance, virtual IP addresses are now fully supported.

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Please note that releases before 5.0.0 don't support IKEv1 because the old pluto IKEv1 daemon was not ported to macOS.

Native application¶

We previously maintained a native application for Mac OS X 10.7 and newer. It allowed easy road-warrior access in a similar fashion as the NetworkManager integration does on Linux.

With the availability of the standard IKEv1/IKEv2 client integration in more recent versions of macOS, we have determined that continuing maintenance of a native application build is no longer required. For information on using the integrated VPN client in macOS, see Mac support.

It featured:

  • An easy to deploy unprivileged strongSwan.app, providing a simple graphical user interface to manage and initiate connections
  • Automatic installation of a privileged helper tool (IKE daemon)
  • Gateway/CA certificates get fetched from the OS X Keychain service
  • Currently supported are IKEv2 connections using EAP-MSCHAPv2 or EAP-MD5 client authentication
  • The app does not send certificate requests. So unless the gateway's certificate is installed in the client's Keychain the server has to be configured with leftsendcert=always, otherwise, the client won't have the gateway's certificate available causing the authentication to fail.
  • Requires a 64-bit Intel processor and OS X 10.7 or higher

Archived builds of strongSwan for OS X can be found on http://download.strongswan.org/osx.

Homebrew¶

As an alternative to the native app, strongSwan was recently added to Homebrew. The strongswan Formula makes installing and updating the current release very simple. The plugin configuration is most suitable for road-warrior access, that is, plugins specifically designed for use on gateways are disabled (e.g. attr or eap-radius).

sudo is not required to install strongSwan, but is later needed when running ipsec, swanctl, or charon-cmd.

Ipsec

MacPorts, Building from the Git repository¶

It's also possible to build strongSwan manually from the Git repository or a source tarball. When building from the Git repository it is recommended to use MacPorts to install the build dependencies. That's because some packages provided by Homebrew are unsuitable to build strongSwan from scratch.

Requirements¶

If you build from the Git repository the tools/packages listed in source:HACKING have to be installed via MacPorts.

Depending on your plugin configuration other packages may be required, such as the GMP library or a newer release of the OpenSSL library.

Building strongSwan¶

Images downloader for mac. The regular installation instructions may be followed to build strongSwan.

For

The following ./configure options are either required, or recommended:

  • --disable-kernel-netlink - Required to disable the Linux-specific kernel interface
  • --enable-kernel-pfroute - Required to enable the interface to the Mac OS X network stack
  • --enable-kernel-pfkey - Required to enable the interface to the Mac OS X IPsec stack. Alternatively, the --enable-kernel-libipsec option may be used to enable strongSwan's userland IPsec implementation that provides support for AES-GCM (depending on plugin configuration) in IPsec processing, which the Mac OS X kernel currently does not
  • --disable-gmp --enable-openssl - Recommended to avoid additional dependencies by using the system's OpenSSL library instead of the GMP library for public key cryptography
  • --enable-osx-attr - Recommended to enable DNS server installation via SystemConfiguration
  • --disable-scripts - Required because these scripts are not fully portable
  • --with-lib-prefix=/opt/local - Required because MacPorts installs libraries and header files in /opt/local
Note:
  • For releases before 5.0.0 you also need to add --disable-pluto.

Limitations¶

  • Mac OS X 10.5 doesn't provide any means (e.g. IP_PKTINFO or IP_SENDSRCADDR) to set the source address of IPv4 UDP packets sent over wildcard sockets.
    This could be a problem for multihomed gateways.
  • Due to the lack of policy based routes, virtual IPs can not be used (client-side). This has been resolved with 5.1.0 by using TUN devices.

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  • The kernel-pfroute interface lacks some final tweaks to fully support MOBIKE. With 5.1.0 several improvements have been made in regards to network mobility. But due to a limitation of the Mac OS X kernel (IPsec SAs can't be updated if an IP address changes) IPsec SAs have to be rekeyed instead of updated with a simple MOBIKE message.

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