The main difference with MAC OS, is that you need to allow more ports incoming on your firewall. The protocol list for macOS is:
UDP— 500, 1701, and 4500
TCP—1723, 443
IP protocol— 50
The MAC OSX Client is on the support site.
In addition, we launched an Ipad, iPhone client today, as well:
http://itunes.apple.com/us/app/aruba-networks-via/id481378525?mt=8