With application management, you can filter network traffic according to the behavior of the data stream. In this way, parts of an application—such as the chat feature in Skype—can be systematically filtered out even if they are encrypted.
Important:
In some cases, for example with Skype, the Application Management filter can only classify applications after a certain number of packets have been exchanged. This means that there is no way to prevent the initial contact. However, all subsequent packets are then blocked.
