You must purchases licenses from Guardian Digital, Inc. Once Guardian Digital issues the licenses they may be downloaded, via the GDSN, to your EnGarde machine.
From the EnGarde License Manager page, click the "Scan for New Licenses'' link. Your EnGarde machine will obtain a listing of all your licenses via the GDSN and offer to download any licenses present on the GDSN but not on your system. New licenses will be highlighted green.
If any new licenses are found click the "Download Licenses" button. A message will appear when the the new licenses have been downloaded.
You must restart IPsec for the new licenses to be recognized.