Explanation
The best way to proactively know that something may get blocked when putting a policy rule in the environment is to search the data using the test rule functionality in the VMware Carbon Black Cloud Endpoint Standard console. The test rule functionality allows the administrator to test a new rule's settings before applying it in the environment. The system checks to see how the rule would have affected the organization over the last 30 days and displays the number of devices and events that would have been impacted by the rule. The administrator can use this data to confirm or modify the settings and avoid unnecessary blocks or false positives. The test rule functionality is available for both permission rules and blocking and isolation rules12.
The other options are not recommended or feasible for obtaining this information. Examining log files to see what would be impacted is not a reliable or efficient method, as it would require manually reviewing a large amount of data and correlating it with the rule settings. Putting the rules in and seeing what happens to the endpoints is a risky and reactive approach, as it could cause disruption or damage to the endpoints and the network. Determining what would happen based on previously used antivirus software is not a valid or accurate method, as different antivirus software may have different detection and prevention capabilities and configurations. References:
Set Permission Policy Rules - VMware Docs, Procedure section, step 7.
Set Blocking and Isolation Policy Rules - VMware Docs, Procedure section, step 7.