What is a VPN, and what does it do on a Mac?

A VPN, or virtual private network, is often touted as the ultimate in web security, which makes it sound more complicated than it really is. In truth, VPNs are simple software that anyone can use.

This article is a brief introduction to what VPNs actually are and what they can do for you on a Mac.

*What is a VPN?*

Put...