Adding a license on ASA

You can request and apply a demo license (lasts 30 days) while you wait for the real license to be purchased.

Email [ licensing@cisco.com ] with the model [ASA5505] and serial [ xxxxxxxxxx ] and them to send you a [SECURITY PLUS K9] demo license.

When you get your new license purchased.

Go to http://www.cisco.com/go/license

Add your pak number

Fill in the serial of the device

You will get an email from cisco with the license

xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx

On the deivce do
conf t
activation-key xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx

Note:  For some new license settings to take effect a system reboot may be required.Software License Agreement