D-Link DFL-1660-IPS-12 Manual page 12

UTM Firewall Registration & Activation Manual
3.Login your firewall, point your mouse to "Maintenance" in the
tool bar of firewall UI, and click "License" from the pull down
menu. You can enter the trial activation code for UTM Update
Service from here.
For Example: You want to activate IPS Update Service
a. Enter the IPS trial activation code and click the "Activate"
button
b. Firewall is contacting the License Server
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