[seul-edu] Students can access Principal's files!

[Robert Maynord <maynord@terracom.net>]

Dear Seul Folks:

I have close to 70 machines running on our school network now - almost 
all Linux.  Students log in with NIS, and load their HOME directories 
 with NFS.  The server is running Mandrake 8.0. All works fine, except 
for one problem:  the server won't let me change permissions on the HOME 
directories, and they are set to 755.  This means that all the students 
can access the principal's HOME directory for viewing.  They can also 
view each other's directories.  When I try to change permissions on the 
HOME directories to 700 (as root) they stay changed for about 15 
minutes, and then change back!!!!

I have tried disabling msec and it made no difference.  I have also 
disabled cron - but no luck.  Something is auto-changing the permissions.

I have been looking for 2 weeks, but no luck.  Does anyone have a clue 
as to what might be auto-setting my HOME directory permissions?


Thanks!

Robert Maynord