Restrict NFS access to root

[sudhirav]

Hi Everybody,

If there is a general NFS share in the LAN and for example this share has three files - a, b, c is there any way to restrict file access to the root user of one particular host(falcon) in the same LAN environment while the normal users from the same host(falcon) should be able to access the NFS share & files a, b, c.

Thanks in advance

[Segfault]

Normally local root does not have root rights on remote NFS volumes, unless specified in exports file of that remote host.
Anyway, since root can su to any user any time denying access from root account does not make much sense.
What makes sense is restricting root access on all computers in your network.

[sudhirav]

Hi,

Thanks for the help, I would like to know more about the other option also. As you pointed out unless specified in exports file on the remote host local root doesn't have root right on remote NFS volumes, would like to know how is root given right by specifying in the exports file ?

[Segfault]

This and many more questions are answered in man exports in remote host.
For Linux the option is root_squash, for BSD it is maproot, etc.