My client has a static ip with currently 5 gigs of data. Currently there is no dedicated server. He'd like to put these files on a NAS server instead of using an on-line company which is what he's currently doing. Is there a NAS server that can be accessed by remote users. He would like everyone (both local and remote users) to access the NAS server via a mapped drive on there local computer. He needs three different sets of files each with different user rights. Is there such an thing without having to install a VPN?