Yes, that was possible.
You need to ensure these 2 thing is it configure correctly?
#1. Go to your backend > Easyblog > setting > general > Login To Read Full Post - NO
#2. Go to your backend > menu manager > find `Easyblog (Post) frontpage` menu item > check the `access` is it set public
If above step is done, then visitor can access your site post without register.
Hope this help.