Backup encryption required for firewalls with a subscription

[cotosso]

Firewalls with active subscription currently send their backup to Nethesis Operation Center, regardless the fact they are encrypted or not.
To promote best practices in cybersecurity measures and enhance data protection I propose to send backups only if they are encrypted with a passphrase.

Proposed solution
Ensure backups are transmitted to the Service Center only if they are encrypted.

If the firewall has an active subscription and the passphrase is not configured:

• Display a notification in the Dashboard informing the user that backup transmission is currently suspended.
• Send information to the Nethesis Operation Center indicating whether the passphrase is configured or not (there is already an issue for that: Inventory: add backup passphrase status (set/unset) #988)

[gsanchietti]

Current proposal has some drawbacks:

• Operational Disruptions: Users who haven't set a passphrase for encryption might experience disruptions in their backup routines, leading to potential data loss if they're unaware of these new requirements.
• User Experience: Forcing users to configure a passphrase might add complexity and inconvenience, especially for those who may not be familiar with encryption practices or have not previously used them.
• Support Overhead: Implementing this change might increase the support burden, as users may require assistance with configuring encryption and troubleshooting any issues that arise from the new policy.
• User Awareness: After this change is in place, users who haven't connected to a firewall for a while may not realize that the configuration must be fixed, leading to confusion and potential lapses in backup coverage.