You can limit the access privileges of users on remote systems as follows.
Create a user account with limited access rights and permissions and configure NFS Server to run from that account. NFS Server will take on the security attributes specified for that account and export those privileges to the remote system. Refer to the Microsoft Windows NT Workstation or Server documentation for creating user accounts.
For shared folders and drives that contain important files, restrict access to read-only or restrict access to well-known and trusted hosts.