Option Specifies optional characteristics for the directory being exported. You can enter more than one variable by separating them with commas. Otherwise, if not specified, the directory is exported with read-write permission. The Client parameter can be either the host name or the network name. If a rw host name is not specified, the directory is exported with read-write permission to all.
Gives mount access to each client listed.
A client can be either a host name or a netgroup name. The default value allows any machine to mount the given directory. The default value for this option is -2. Setting the value of the anon option to -1 disables anonymous access. Note that, 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.