You must complete licensing during the initial three-day grace period. If unlicensed after three days, the Barracuda NG Firewall or NG Control Center switches to demo mode and the default root password (ngf1r3wall) is enabled, even if you have already changed the password. Licenses are bound to the MAC address of the network interface the management IP is on.
For more information on license types, see Licensing.
Barracuda NG Hardware Appliance Licensing
Hardware appliances only need to be activated. Following activation, the licenses are downloaded automatically.
For more information, see How to Activate and License a Standalone Hardware Barracuda NG Appliance
Barracuda NG Vx Licensing
Virtual units are activated by entering the serial number and license token you received from Barracuda Customer Services. After activation, the licenses are downloaded automatically. Licensing for Barracuda NG Firewalls deployed in one of the public cloud services are also licensed using a license token and serial number.
For more information, see How to Activate and License a Standalone Virtual Barracuda NG Firewall
Barracuda NG High Availability Cluster Licensing
When licensing units in a high availability cluster, it is important to activate the secondary unit first. The secondary unit will not download any licenses after activation. Instead, it waits for the primary unit to be activated. The primary unit downloads the licenses for both units and installs the license on the secondary unit via HA sync.
For more information, see How to Activate and License a Barracuda NG High Availability Cluster