LinuxQuestions.org - On NFS, non-root users can move/rename files belonging to root.

OK, here are the facts:
stuart-server is the NFS server.
stuart-desktop is the NFS client.
The user stuart on both machines has UID 1000 and GID 1000.

And here is the line of stuart-server:/etc/exports referring to the directory I'm having trouble with:

Code:

/home/stuart stuart-desktop(rw)

Whenever I mount stuart-server:/home/stuart on stuart-desktop, the problem is that any user can mv files belonging to root. This is bad, but it isn't as bad as it could be: luckily, users can't write to files belonging to root.

Here is what I get when I mount stuart-server:/home/stuart on stuart-desktop (parenthetical stuff in bold is my commentary, not the output of the shell!):

Code:

stuart@stuart-desktop:~$ sudo mount stuart-server:/home/stuart /home2/stuart

[sudo] password for stuart:

stuart@stuart-desktop:~$ cd /home2/stuart

stuart@stuart-desktop:/home2/stuart$ ll this.file.belongs.to.root 

-rw-r--r-- 1 root root 0 2007-10-31 15:31 this.file.belongs.to.root

stuart@stuart-desktop:/home2/stuart$ mv this.file.belongs.to.root \

> but.`whoami`.can.move.it

stuart@stuart-desktop:/home2/stuart$ ll but*

-rw-r--r-- 1 root root 0 2007-10-31 15:31 but.stuart.can.move.it (bad)

stuart@stuart-desktop:/home2/stuart$ cat > but.stuart.can.move.it #However, I can not write to it

bash: but.stuart.can.move.it: Permission denied (good)

stuart@stuart-desktop:/home2/stuart$

Howcome any old user is allowed to move files that don't belong to him? Naturally, I don't want it to work that way - I want it to work the same as it would if they were local files.

To help me fix this, you may request additional information about these computers if you need to, thank you.