To notify the users that access to an application is blocked

1. In the console, open a Firewall policy.

2. On the Firewall Policies page, click Rules.

3. Enable custom firewall protection.

4. On the Notifications tab, check the following options that you want to apply:

   Display notification on the computer when the client blocks an application	A notification appears when the client blocks an application.
   Add additional text to notification	Click Set Additional Text and customize the notification. Customizing the notification text is optional.

5. Click OK.