Easiest way to install grsecurity. The good thing about it is only grsecurity provides protection against zero-day and other advanced threats that buys administrators valuable time while vulnerability fixes make their way out to distributions and production testing.
1. Go into repository directory:
$ cd /etc/yum.repos.d/ $ wget http://repos.coredumb.net/grsecurity/grsecurity.repo
2. Install grsecurity kernel and administrator tools:
$ yum clean all $ yum install kernel gradm
3. Reboot so it could load the grkernel: