If the firewall detects a new or modified application, it displays a checksum learning dialog.

Checksum learning dialog is displayed only if you use checksums to authenticate applications. For information, see Turn the use of checksums on or off.

If you want to allow the application to access the network, you must add its checksum (a unique identifier) to the list of recognized checksums.

Select one of the following options:

• Add the checksum to existing checksums for this application allows multiple versions of this application.
• Replace any existing checksum for this application replaces all existing checksums for the application with the one requesting access, and thereby allows only the latest version of this application.
• Block this application until it is restarted blocks the application on this occasion.