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Which version to install depends on which version of MacOS you have. For currently supported versions of OSX we currently recommend the latest stable release which may be downloaded from .

If you have difficulty with the latest stable version then what to try depends on the version of OSX you have. You may want to try older versions available on their deprecated versions page

If you are unable to find a version which works for you after trying the latest stable and appropriate deprecated versions, then please contact the Maths Helpdesk.

After installing tunnelblick, download the config file. Drag and drop the profile file onto the Tunnelblick icon as shown to install the configuration.

Drag and drop .ovpn file

Two error messages will pop up:

  • Answer "Always use the plugin" when asked about
  • Ignore the message about comp_lzo (an option to compress traffic over the VPN which will apparently become obsolete in later versions.)

You can then connect and disconnect via the Tunnelblick icon.


Select 'Connect Maths' from the TunnelBlick icon. The credentials you should use are your Maths Faculty credentials - CRSID and Maths password.