AcuServer allows users of Windows NT and Windows 2000 networks to choose between the system security that AcuServer offers and the security features offered by their own operating system. By default, AcuServer system security is used to govern file access. (This is discussed in Chapter 6.) If you prefer to use Windows NT security mechanisms, you may do so by setting the configuration variable NT_SECURITY in both the runtime configuration file and server configuration file. For more information about the NT_SECURITY configuration variable, see section 4.2.2 Server Configuration Variables.