Redirecting all 403 forbidden request to 404 'not found' page.

I am trying to redirect all forbidden request to 404 'not found' page.

Url I am trying to access.

http://localhost:4503/content/mysite/home.html (it is working fine).

But when I try to access,

http://localhost:4503/content/mysite (it is forbidden here).

My site is developed in adobe experience manager and I don't see any config/setting related with redirecting in aem. So, I have to do something on web server which is Apache here. And I am not pretty much familiar with Apache and creating rules in it. I would like to ask if there is anything that redirect any forbidden request to 404 not found page.