ANTG

How To Secure /tmp and /dev/shm partition

Keep you server clean of rookits is a good idea to get a good security level. A sysadministrator can create a seperate partition for /tmp and mount it with noexec and nosuid parameters. And to do it is not necessary to reboot or repartition your drive.

1. First you should secure /tmp:

Make a 1GB file for /tmp parition and an ext3 filesystem for tmp:
[root@antg ~]# dd if=/dev/zero of=/usr/tmpDSK bs=1024 count=1024000
will take a while, just wait until finished.