To free up some space on your hard drive, you can clear the log files:
From Outpost Firewall's menu, select Tools.
Select Log Viewer. For details see also Viewing logs.
In the Console Tree, select a log.
Right-click within the Information Panel to display its context menu.
Select Clear Log.
In the Clear log dialog, select a method of deletion by check marking Delete all records or by specifying the date before which all records are to be deleted.