The access mode for Smart Cache devices can be changed from Group-based IP to Range-based. 

To set access to IP Ranges you need to go to the Devices administration panel on your domain: 

Administration panel -> Devices -> Storage Devices -> <Device Name> -> Settings -> Access Rules


By default, all domain users will be able to discover the Smart Cache Device. It is possible to limit the discoverability by adding IP Range rules. Once a rule is set, only Desktop App users whose device's internal IP(s) match (one or more of) the rules will be able to access the Smart Cache Device.