Snow Leopard Mac OS X's latest version 10.6, released on 28 Aug 2009, is now capable of connecting to VPNs using the following protocols: L2TP over IPSec, PPTP and Cisco VPN. This is now integrated into the Network preferences:

This means that people using a Mac with Snow Leopard can connect to the NYU VPN service without downloading and installing the Cisco VPN Client software, and instead using the built-in Network preference.