To install a VM-Series firewall you must have access to the Open Virtualization Alliance format (OVA) template. Use the auth code you received in your order fulfillment email to register your VM-Series firewall and gain access to the OVA template. The OVA is downloaded as a zip archive that is expanded into three files: the .ovf extension is for the OVF descriptor file that contains all metadata about the package and its contents; the .mf extension is for the OVF manifest file that contains the SHA-1 digests of individual files in the package; and the .vmdk extension is for the virtual disk image file that contains the virtualized version of the firewall.