Export mount options - there are very many, here are some

    * Because syntax/names varies by OS, It won't be shown here

    * Read-only or read-write export
          o Read-only is typically the default

    * root-squashing - by default root's UID is changed to user nobody
          o UID 0 is mapped to a non-priviledged UID for root access on the client

          o Makes it impossible for root on a remote machine to write to root files on exported partition

          o Has no effect on security for other UIDs unless ALL UIDs are squashed

            They all get changed to the same UID on the server, typically -2.

          o Some servers let you determine the value of the translated UID

            Translation is also done for the root GID. Typically the UID is mapped to a value of -1 or -2, that is the user nobody. This behavior is a reasonable default to have and it is somewhat effective for root-owned files, as the mapping is done on the server. You must turn this behavior if you want root to be able to write to the filesystem remotely. You can cause the behavior to be disabled only for certain machines (this is the best way to go).

            If you use 'sudo' a lot, you will encounter 'permission denied' errors when you try to use sudo for something in an NFS mounted partition. Remember that the root UID gets changed, and the permission denied message suddenly makes a lot more sense! You can still use sudo in many of these situations by making use of its '-u' option to change to a specific UID.