Draytek Vigor2820 Series User Manual page 218

4. Click Save button, the configuration will download automatically to your computer as a
file named config.cfg.
The above example is using Windows platform for demonstrating examples. The Mac or
Linux platform will appear different windows, but the backup function is still available.
Note: Backup for Certification must be done independently. The Configuration Backup
does not include information of Certificate.
210 Vigor2820 Series User's Guide