I was wondering how I would go about setting this up. I would like to connect an external hard drive to my airport extreme and be able to access it over the internet via a web browser. Is there a good way to do that?
Just plug it into your Airport Extreme, and then in Airport Utility check the box for "Share disk over WAN". You'll need your home IP address or you can use a service like no-ip.com to keep track automatically so you can access it remotely.