Checking whether selinux is available / enabled

The easiest way to check the current status of selinux is to either issue:

sestatus

or

cat /etc/sysconfig/selinux

If neither work we should check the kernel name / version with:

uname -a

and confirm whether the kernel supports selinux (i.e. if it's runnung above version 2.6 it should support SELinux)

If you get a 'command not found' error we can try to install:

yum install setools policycoreutils selinux-policy

and issue the following again:

sestatus

You should now (hopefully) be able to enable by ensuring 'SELINUX=enforcing' and 'SELINUXTYPE=targeted' is present in:

/etc/sysconfig/selinux