The Capriza proxy is used by the Capriza Designer to access web applications.
The target web application may behave differently based on the user location, therefore the Capriza Designer is using a proxy in the same location as the Runtime environment that will eventually run the Zapp. This is required to get similar results when interacting with the target web application.
In case there are issues with connectivity to the application, the Capriza proxy can be disabled. First, open the Settings dialog by clicking the gear icon in the upper righthand corner of the Designer.
Then, check "Do not use Capriza proxy for creating Zapps."