I'd like to set up a VPN running somewhere on my home network that would enable me to securely tunnel all Internet traffic through it from an untrusted network. That way, I could browse sensitive sites with a little less worry.
My top priorities are transparency and ease of setup.
I currently have a desktop PC (which could forseeably run a VM with VPN software), a Mac laptop, and an Apple Airport Extreme. Can I make do with what I already have, without purchasing a VPN-enabled router?