I just purchased an Apple Time Capsule for extra storage space. Is it possible to routinely backup a remote linux server on Time Capsule?

It seems like it would be possible to consistently backup a web server on Time Capsule using Back to My Mac by creating cron jobs on the server and a local Macbook.

Does anyone have experience with this? Is it possible with Time Capsule? If so, how did you accomplish it?

Thanks for your help.