Sources of type Proxy allow imglab to access resources of different Web addresses acting like a proxy.
To explore how Images API URLs are used for Proxy Sources please take a look to the serving images documentation section.
To generate a Proxy source follow these steps:
On imglab go to Sources section and click on Add Source.
Set a valid Name.
On Security section select Secured Requests.
On Type section select Proxy type.
Proxy sources do not have specific attribute settings.
For security reasons sources of type Proxy are required to use Secured Requests.