Why is the Firewall / AppRF page on the controller dashboard is blank?
This feature is supported from AOS 6.3 onwards:
In AOS 6.3, the page that provides visibility into controller traffic is accessible through the WebUI Dashboard -> Firewall.
As of AOS 6.4 , it became accessible through the WebUI Dashboard -> AppRF.
For traffic classification to appear on the dashboard, a process called firewall-visibility needs to be enabled.
It could be enabled either from the CLI or from the WebUI as follows:
Click on the hyperlink 'here' in the middle of the Dashboard-> AppRF page:
Note: Such feature is not available on the 600 series controllers