1. Disable Services

    Let’s disable some unnecessary services using http://www.imminentweb.com/technologies/centos-disable-unneeded-services-boot-time and http://www.securecentos.com/system-prep/ as guides:

    chkconfig anacron off
    chkconfig atd off
    chkconfig autofs off
    chkconfig avahi-daemon off
    chkconfig cpuspeed off
    chkconfig haldaemon off
    chkconfig ip6tables off
    chkconfig kudzu off
    chkconfig mcstrans off
    chkconfig messagebus off
    chkconfig netfs off
    chkconfig portmap off
    chkconfig xfs off
    chkconfig yum-updatesd off