In order to keep the connection with the web client alive while the download is being scanned, Vital Security Web Appliances 'trickle' data to the download manager. Simply put, when Adobe Download Manager requests a file from Adobe's update site, the Vital Security Web Appliance will slowly send the site's response back to the download manager. This gives the Vital Security Web Appliance time to scan the requested download and verify that it is safe.

Once it is installed, the Adobe Download Manager operates as a web client application. In other words, like a browser, it uses HTTP to retrieve the latest version of Adobe Reader from Adobe's website. Consequently, Vital Security Web Appliances will scan any downloads initiated by the Adobe Download Manager. With Internet Explorer, the download manager is implemented as an ActiveX Control, and it might initially be blocked by a Vital Security Web Appliance due to the fact that it performs network and disk operations. Given a typical configuration, this block will be logged, allowing the administrator to easily modify the policy and allow the control. Rather, when a user goes to Adobe's website and attempts to download Adobe Reader, the Adobe Download Manager is downloaded. The installer for Adobe Reader is not downloaded directly.

Downloadable adobe reader