Under NFSv2 and NFSv3, the numeric user and group id is used to determine permission, and these must be aligned between the client and server. I have an oracle uid 60 on an older system that maps as elcaro on an NFS client (because I have a different oracle user there as uid 54321).
Under NFSv4, direct uid/gid is no longer used, but the RPC.idmapd process determines privilege. I'm not really sure how it works beyond continuing to work when uid/gid synchronization is in place for NFSv3 and the connection is upgraded.
There is also an NFS ACL standard, but I don't know anything about it.
Under NFSv4, direct uid/gid is no longer used, but the RPC.idmapd process determines privilege. I'm not really sure how it works beyond continuing to work when uid/gid synchronization is in place for NFSv3 and the connection is upgraded.
There is also an NFS ACL standard, but I don't know anything about it.