Hey all, I'm considering a Time Capsule for backing up a Mac that's always at home, and a Mac that's rarely at home. Keeping in mind that my ISP does NOT block any ports, can I securely have a Time Capsule available for backing up whenever this "away" Mac is on the Internet? I know I can VPN in, but ideally I'd like for the TC to just "show up" when I'm on the Internet, like it would if I was on the local network. Is this possible with Back to My Mac? Perhaps more importantly, is this practical? I know that backing up over the Internet (~50mbps) is slower than over WiFi (~1300mbps). Is there anything else I should know? Does anyone have this setup? How's it working out?