Network Drive Access

I'm thinking of setting up one of my 1TB external drives on my Airport Extreme as a network drive. Is there a way to limit which computers and user accounts can access the drive?

Thanks, John

And BUMP!

You can set up a password in the Airport utility so you can get access by a few different options if you go into manuel setup, disks.

You'll have to have the drive attached and select it under disks and go into file sharing