Changing the Firewall action for an application network rule
You can change the Firewall action that is applied to all network rules for an application or application group that were created by default, and change the Firewall action for a single custom network rule for an application or application group.
To change the Firewall action for all network rules for an application or group of applications:
In the application settings window, select Essential Threat Protection → Firewall.
Click Rules for applications.
This opens the list of application rules.
If you want to change the Firewall action that is applied to all network rules that are created by default, select an application or group of applications in the list. Manually created network rules are left unchanged.
Right-click to open the context menu, select Network rules, then select the action that you want to assign:
Inherit.
Allow.
Block.
Save your changes.
To change the Firewall response for one network rule for an application or application group: