Windows Vista Firewall
offers two-way filtering for better security but its the bare minimum and still limited. By default, most outbound filtering is turned off (outbound connections are allowed
) and inbound filtering is turned on (inbound connections are blocked
). Configuration is confusing and there is no practical way to to configure outbound filtering to stop all unwanted outbound connections. You can only turn inbound filtering on or off, and through the various tabs, configure how inbound filtering works.