FNS, the Federated Naming Service, supports the use of different autonomous naming systems in a single Solaris environment. FNS allows you to use a single, simple naming system interface for all of the different name services on your network. FNS conforms to the X/Open federated naming (XFN) specification.
FNS is not a replacement for NIS+, NIS, DNS, or /etc files. Rather, FNS is implemented on top of these services and allows you to use a set of common names with desktop applications.
See Part VAdministering FNS for more information about FNS and how to administer it.