The Endpoint App Signatures database is used to identify various proxy tools app categories and custom endpoint apps, as shown in the following figure:

Viewing Endpoint app signature rules

Navigate to Objects > Content Identification Database > Application Signatures, and select the Endpoint App Signatures tab.

Total: Show the number of app rules in the device’s current internal rule signature database.

Current Database Released On: Show the release date and time of the current version of the internal rule signature database.

Update Service Expires On: Show the validity period for the upgrade of the internal rule signature database.

Category: Show the categories of proxy tools app signature and custom endpoint app.

In Search, enter the rule keyword to be queried (e.g., set "Psiphon" as the filter condition).

Enabling/Disabling endpoint app signature rules

Navigate to Objects > Content Identification Database > Application Signatures, and click the Endpoint App Signatures tab.

Select the app name "Ultrasurf" and click Disable or Enable. You can disable or enable the endpoint app rules of Ultrasurf.