AC68P security

Hello,

So I want to hook a USB drive to my router to share the whole drive in the network. I also want to access it remotely. I would like to make backups of my laptop's hdd on it too, so it would contain personal information that I don't want to share. But it would be nice to have access to it remotely too.

So what should I do to have excellent security on my system? I guess could setup a password for the folders I don't want to share. Should I also encrypt what I don' want to share? So...

AC68P security