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Section 2. Basic Connectivity and Device Management > Licensing the ASA
Licensing the ASA
The ASA is licensed with the use of activation keys. The activation key is tied to the serial number of the ASA, which is hard-coded into the operating code of the ASA.
To enable a feature, you need to purchase the required license. You then redeem this with Cisco after providing your serial number, at which time you will be provided an activation key. Because it is tied to the serial number, this activation key works only on the ASA for which it was requested.
Navigate to Device Management > Licensing > Activation Key and enter the new activation key (see Figure 17).
Figure 17. Activation Key
You can view the current license and features from the Home screen and from the Device Dashboard in ASDM and from this screen where the exact license details and what is enabled on the ASA you are connected to are shown.