License server: stores all Terminal Services licenses that have been installed for a group of Terminal Servers and tracks the licenses that have been issued. Terminal Services Licensing allows Terminal Services to obtain and manage its Client Access Licenses, thus simplifying the task of license management for the system administrator.
Terminal Services Internet Connector License: This license is used to allow anonymous use of a Terminal Server by non-employees across the Internet on a concurrent basis.
Client Access: This license is used to allow anonymous use of a Terminal Server by non-employees across the Internet on a concurrent basis.
Built-in: Clients that are running the Windows 2000 operating system are automatically licensed as Terminal Services Clients.
Temp: When a Terminal Server requests a license and the license server has none to give, it will issue a temporary license. The license server will track the issuance and expiration of these temporary licenses.