Available only in Outpost Firewall Pro. See Benefits of Outpost PRO.
To add a system rule:
Select Options
Select System
Click Settings in Global Application and System Rules field
Click Add
Select the Event to which the rule applies. You can select the criteria for your rule in the Select Event window:
Selecting a checkbox, in the Select Event window, adds its message to the Rules Description field. If a rule is listed as undefined, you should click on it and select one of its options.
Select an action for your rule in the Action field. It can be:
Allow it
Deny it
Reject it
Report it
Run application
Assign a name to the rule in Name of the Rule field.
Click OK.