Securing WP database files (w/ 'Askapache' plugin)

I’m trying to setup a strong/secure wordpress install, and just downloaded/activated the askapache plugin (http://wordpress.org/extend/plugins/askapache-password-protect/ )

However, after setting everything up, nothing looks changed – I can just access everything all the same (it never even asked me to create a new password/key when I installed the plugin..)

Is this because i’m using it on localhost? I’m not partial to this program, but it seemed a smart idea!