Securing "tmp" without repartition
First you should secure /tmp: Make a 1GB file for /tmp parition and an ext3 filesystem for tmp: # dd if=/dev/zero of=/dev/tmpFS bs=1024 count=1000000 # /sbin/mkfs.ext3 /dev/tmpFS Create a backup copy of your current /tmp drive: # cp -Rpf /tmp /tmpbackup Mount our new tmp parition and change permissions: # mount -o loop,noexec,nosuid,rw /dev/tmpFS /tmp # chmod 1777 /tmp Copy the old data: cp -Rpf /tmpbackup/\* /tmp/ If you run the mount command and you should get something like this: /dev/tmpMnt on /tmp type ext3 (rw,noexec,nosuid,loop=/dev/loop0) ...