Restrict page access

I want to restict users from access to specified pages if the user enters my site fro outside a specific IP-range (Intranet).
My users do not log in to the site.
My site is for a gated community and some information is to be kept internal.

Can I configure your plugin for this or do you have other recommendations?

//Per-Ola

http://wordpress.org/extend/plugins/restricted-site-access/