System policies define what to do with all incoming, outgoing, and transit communications that do not match the explicitly defined rules. The system policies are usually displayed at the bottom of the list of rules.
To allow or deny communications of specific type:
- Go to Extensions > Firewall > Modify Plesk Firewall Rules.
- Click the icon to the left of the policy name you want to change. If the policy currently allows all connections, clicking this icon will prohibit all connections and vice versa.
- To apply the changes, click Apply Changes, and then click Activate.
Note: Unless your configuration is activated, you have a chance to discard changes to all the policies you configured. To do this, click the Discard Changes button.