NSS on NetWare supports NFSv2 and NFSv3 as specified in Working with UNIX Machines
in the NW 6.5 SP8: AFP, CIFS, and NFS (NFAP) Administration Guide. See the referenced section for information on how to configure NIS and NFS for your NetWare server, the NFS mode options, and how to export NSS volumes on NetWare for access by NFS users.