Starting from September 2014, OCIO rolled out a new VPN technology using the GlobalProtect appliance to allow users to make secure connection to the campus network over the public network. Data transmitted via the VPN connection are encrypted which enables users to use some IT services outside the campus as secure as in the office. These include using Microsoft Outlook, accessing software available on the VDI platform, making connection to some central network servers using SFTP client software, and etc out of the campus.
You can refer to the VPN for macOS for details.