SilverSHielD "Pro" licenses are tied to the hardware and they must be validated by our online license server upon activation.
So how can you install a "Pro" license onto a SilverSHielD Server that doesn't have any access to the Internet?
It's fairly easy, just install the SilverSHielD Management Console onto another computer that can see (connect to) both the offline SilverSHielD Server and the Internet at the same time. See the picture below for a visual explanation.
SilverSHielD is designed in such a way that the Server part doesn't necessarily have to have Internet access, only its Management Console has to.