Another followup to my own thread.....
Here is a method of protecting your LinkStation's backup USB drive from being corrupted by unauthorized users, malicious code, etc.
1) Setup a backup job on your LinkStation to back up to an attached USB drive.
2) Set up a user on your LinkStation. Preferably make it a user that you don't intend to use for any other purpose. (DON'T FORGET YOUR NEW USER'S PASSWORD).
3) Set access restrictions on the USB drive to limit access ONLY to that one user.
Now the LinkStation will back itself up to the USB drive per your backup job schedule, and yet that drive will not be accessible through the LinkStation over the network except by this user id you created specifically for the USB drive.
This prevents:
* Accidental tampering with your backups.
* Malicious code that may try to corrupt any attached drive it can find on the network.
* Unauthorized read or write access to the attached USB drive.
The assertion: The USB drive you have attached to your LinkStation is only there to receive backups. As such, it practically unnecessary to ever access it through the network. It just quietly accepts backups, and is otherwise undisturbed. This will assure a higher level of confidence in the completeness and accuracy of the backup it contains.
Use the backup log on your backed-up share as a confirmation that backups are occurring as you wish. No need to browse the USB drive's filesystem.