Mac Mavericks manual here
From WUR Linux User Group
How to use VPN for mac running Mavericks
Be aware that you need a VPN approval from IT first!
In your systems preference panel go to network
Click on the + sign to add a new network type
Select VPN and Cisco IPSec
After that you fill in the server address and your account name see image 1
In authentication settings see image 2
Not everything is filled in due to security reasons, you have to go to the wur intranet website and download the VPN information files ( VPN Profie WUR PCF )
When the file / folder is downloaded open the WUR.pcf file and the host (url) can be found in here, the group name and the group password.
The shared secret ( enc_GroupPwd in the WUR.pcf file) needs to be decrypted via this website:
and then filled in.
Now if all settings are correct and you have permission from ICT you can now connect to the WUR network.
If you have any questions feel free to use the mailing list.