The present invention discloses a URD including: a non-volatile storage memory having program code, wherein said program code is configured to enable a network protocol for communicating with a host system; and a controller for controlling operations performed on said storage memory. Preferably, the storage memory includes flash memory. A URD including: a host system having a firewall; and a URD having a nonvolatile storage memory, wherein said storage memory includes program code, and wherein said program code is configured to enable a network protocol, said URD operationally connected to said host system; wherein said firewall is configured to provide security measures related to said URD. Preferably, the firewall is a software firewall or a hardware firewall.