How to secure /tmp and /dev/shm at linux?

["Monty Ree" <chulmin2 () hotmail com>]

Hello, all.

I have found that lots of attackers using /tmp or /dev/shm to save and 
execute backdoor.
So I would like to secure this directory..

I opened /etc/fstab file and added noexec, nosuid option and remounted.

Additionally, how to about ro(read only) option at /dev/shm?
file creation is required at /dev/shm? 
I didn't see any files at this directory. So I think that ro option at this 
partition is good way against script kid.

Which method or solution is recommendable to secure /tmp or /dev/shm?



Thanks in advance.

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