Secure shared memory

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http://askubuntu.com – In my Ubuntu deployment script I have writen a function to secure shared memory. For a webserver it's important to secure the shared memory to tighten up security. Below you can find the code: echo "tmpfs /dev/shm tmpfs tdefaults,noexec,nosuid 0 0" >> /etc/fstab When I reboot the webserver it gets stuck. I can't see where it goes wrong. Do you have an idea, please let me know. (HowTos)