In the details pane, right-click the shared directory you want
to manage.
Click Sharing.
Click NFS Sharing.
Select the Allow anonymous access check box.
To specify a nondefault value for the anonymous user identifier
(UID) or anonymous group identifier (GID), type the value in the
Anonymous UID or Anonymous GID box.
There is no command-line method for this procedure. Using a
command line, you can enable anonymous access or change the default
UID or GID only when you share the directory. For more information
on how to share a directory, see Related Topics.
The anonymous UID and anonymous GID values for a share will be
used when reporting the owner of a file owned by an unmapped user,
even if Allow Anonymous Access is disabled.