You can import configuration settings from one firewall to another, saving a lot of time when replacing an older firewall with a newer model. This feature is also useful when you need multiple appliances with similar configuration settings. The following are the steps to import your new configuration settings.
It is recommended that the Target Firewall be factory defaulted before importing the configuration file (this is not required if the device is already installed).
For example, for SonicOS devices, navigate to Device > Settings > Firmware and settings, and select Import Configuration to import the configuration.
Click Import.
Possible for an Network Error when the settings file is imported. For more information, refer to KB article Getting error "Network error" when importing the configuration into the firewall - GEN7.