Tracking remote website from local piwik installation?

Is it possible to track remote website visits from local piwik installation? I installed piwik on virtualbox with Ubuntu server. The installation went fine and in the end it generated the tracking javascript code which i inserted in the pages of my remote website but no tracking is recorded. This is the javascript code:

The IP is the IP that my router assign to the virtualbox which i replaced with my external ip address but still no tracking is recorded. How can i test if the tracking code is working?