Best Practice / Approach User of Wall Garden and Cron Job Protection.

Dear SIr,

What would be the best practice or approach to achieve the followings?

1. I want to make the front page (the page you see when you call myhotfb.com) go through Wall Garden. The front page uses a plugin by Tom. 
2. At the present anyone can type https://www.myhotfb.com/cron/hourly/ on browser url. This I want to disable or protect like when you try to run https://www.myhotfb.com/upgrade.php it will fail and redirect you to login.
3. Speaking of  the above no. 1. The objective is to limit exposure by having wall garden pass the front page plug through wall garden. I don't want .htaccess solution or should I? cuz I think I should be able to pass the front page through Wall Garden. 

Kindly Please Advise.