4.7.8 Sanitizing the Unit
The concept of sanitizing a SecureSync unit refers to erasing usage data that
may be stored in volatile and/or non- volatile memory, i.e. permanently elim-
inating any data that could be used to trace the unit's former usage. This data
may include – but is not limited to – logs, configuration settings, IPaddresses,
passwords, GNSS geographic positioning data, and network-specific usage data.
The SecureSync has a built-in process to sanitize all usage data. This process
leverages the upgrade process in order to execute the following functions:
Performing simultaneous "clean" upgrades on both software partitions,
rewriting all software to the uploaded version and erasing all user data,
logs, and configurations.
The GNSS receiver's location data is deleted via a cold reset, and is pre-
vented from obtaining more information until electrically power cycled.
Rewriting all eMMC data in two wipes and two confirmations (referred to as
a WIPE 1-4 on the front panel) and two upgrades total.
Feedback during the process will be provided through the serial con-
nection.
After sanitizing all data, the unit will be brought into a HALT state.
4.7.8.1 Sanitizing Process
These are the steps to complete the data sanitizing process:
1. Disconnect all physical connection to GNSS receivers (this includes SAASM
receivers and STL, if you have those configurations).
Note: If you have a SAASM receiver installed, you will need to perform the
zeroize function (reference the SAASMaddendum for more information).
2. From the Safran Trusted 4D website, download the software version that
you would like your unit to be set to after sanitizing.
3.
Log in to the Web UI as an admin user and navigate to TOOLS >
Upgrade/Backup. In the Actions panel, select Update System Software.
4. Upload the software upgrade file previously chosen to overwrite your sys-
tem and select Upload.
5.
Once the upload is successful, select Perform Upgrade and Sanitize Unit.
Choose Submit and then select OK in the confirmation dialog.
6. The unit will undergo the full sanitization procedure (the entire process will
take approx. 20 minutes and may take longer depending on unit con-
figuration). The front panel LEDs will illuminate in order from left to right
scrolling and remain fully lit to simulate a progress bar. The rightmost LED
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CHAPTER 4 • SecureSync 2400 User Manual Rev. 5.2
4.7 Backing-up and Restoring Configuration Files