My Blocked Network Zones

If I add an IP Address or Zone to “My Blocked Network Zones” (via Firewall → Common Tasks) does this block traffic to the IP address/zone, from the IP address/zone or both to and from the IP address/zone.

Many thanks.

Any help???

Special Note: Creating a blocked network zone implements a 'block all' global rule for the zone in question. However, unlike when you create a 'Trusted Zone', this rule is not displayed or editable from the global rules tab of the Network Security Policy interface. This is because you are likely to be trusting only a few zones, there is the potential that you will have to block many. The constant addition of such block rules would make the interface unmanageable for most users.
It is at the bottom of this [url=]online help page[/url] of CIS 4.1