Part of Apple's Network Administrators Toolkit. This extension controls access to workstations and to Network Assistant, and lets administrators and workstation users interact. The extension must be installed on all workstations you want to manage and on all administrator workstations. If a workstation doesn’t have a name, the Network Assistant Startup extension creates one. This name has this form: “Mac” followed by the processor type and the amount of RAM on the workstation. If another workstation on the network has the same name, the extension adds a sequence number to the name.