Disabling of unused and insecure services

The command chkconfig –list will display the list of services on all runlevels. You can turn off the specific services by chkconfig off .

Eg:
chkconfig nfs off
chkconfig nfslock off
chkconfig cups off
chkconfig atd off
chkconfig autofs off
chkconfig xfs stop

Above are some examples of unwanted services commonly running in a server. You can stop these services immediately by using service command.

service nfs stop
service nfslock stop
service cups stop
service atd stop
service autofs stop
service xfs stop