I am trying to setup an alias to point to some directory on my filesystem not in DocumentRoot. Now I get a 403 Forbidden response. These are the steps taken:
1. edit http.co
SELinux was the culprit for me. If you're having this issue on a linux box and your alias and file permissions are correct than try doing a "setenforce 0" to put SELinux into permissive mode. That did the trick for me.