The default value for this option is -2. Setting the value of the anon option to -1 disables anonymous access. Thus, by default, secure NFS accepts nonsecure requests as anonymous, and users who want more security can disable this feature by setting anon to a value of -1. Gives root access only to the root users from the specified HostName . The default is for no hosts to be granted root access.
Gives mount access to each client listed.
A client can be either a host name or a net group name. The default value allows any machine to mount the given directory. This option only applies to AIX Version 4.2.1. The chnfsexp command, mknfsexp command, rmnfsexp command, showmount command. List of NFS Commands and List of NFS Files .