NBF is used by remote computers that need to connect to a computer running Windows NT Server with RAS server. Because NBF dynamically allocates memory and is self-tuning, no configuration is required on the computer running the RAS client service. However, the WanNameQueryRetries parameter in the Registry can be changed to fine-tune RAS name query performance by using the Registry Editor. (This parameter is the WAN equivalent of the NameQueryRetries parameter.)