Network File System NFS <networking, operating system> (NFS) A {protocol} developed by {Sun Microsystems}, and defined in {RFC 1094}, which allows a computer to access files over a network as if they were on its local disks. This {protocol} has been incorporated in products by more than two hundred companies, and is now a {de facto} standard. NFS is implemented using a {connectionless protocol} ({UDP}) in order to make it {stateless}. See {Nightmare File System}, {WebNFS}. (1994-12-12)