Disable Core Dumps

To disable core dumps for all users, open /etc/security/limits.conf, enter:

# vi /etc/security/limits.conf

Make sure the following config directive exists:

* hard core 0

Save and close the file. Once a hard limit is set in /etc/security/limits.conf, the user cannot increase that limit within his own session. Add fs.suid_dumpable = 0 to /etc/sysctl.conf file:

# echo 'fs.suid_dumpable = 0' >> /etc/sysctl.conf
# sysctl -p

This will make sure that core dumps can never be made by setuid programs. Finally, add the following to /etc/profile to set a soft limit to stop the creation of core dump files for all users (which is default and must be disabled):

# echo 'ulimit -S -c 0 > /dev/null 2>&1' >> /etc/profile