How to download my backups without me starting the downloads

My server makes every day 2 backups, every time I must download the backups by FTP.
Is there a way to download the backups via FTP without me downloading it.

I have a laptop that's 24/7 online so a piece of software that does the work would be great.
The IP of my modem at home changes often so I caot put a IP in Directadmin for sending the backups.

I use both Linux / Windows and I prefer Freeware for this task.
What would you advise me to setup for this backup?