Location Screening
Location Screening is a geographically based blocking system that you can use to block incoming connections from unauthorized regions of the world. SecurityGateway determines the country associated with the connecting IP address and then blocks that connection if it is from a restricted location. By default, Location Screening blocks only connections attempting to authenticate. This is useful, for example, when you have no users in a specific country but still wish to be able to receive mail from there. That way you would only block those attempting to log in to your server.
Enable Location Screening
To use Location Screening, enable this option, click the box next to any regions or countries that you wish to block, and click Save.
...only block authentication attempts (mail that does not require authentication is still allowed)
By default, Location Screening only blocks incoming connection attempting to authenticate. Mail that does not require authentication is still allowed. Clear this checkbox if you wish to block all connections from the selected locations.
Select/Deselect all
Use these button to select or deselect all locations in the list.
Exclusions
Exclude connections from whitelisted IP addresses
By default, all whitelisted IP addresses are exempt from the Location Screening restrictions. Clear this checkbox if you wish to apply Location Screening even to whitelisted IPs.
Blocked IP List
This area lists all currently banned IP addresses and the amount of time that has passed since each was banned. You can remove an entry from the list by selecting it and clicking the delete button on the toolbar above the list.
Exceptions - Domains
If you select a specific domain in the "For Domain:" drop-down list box at the top of the page when configuring these settings, that domain will be listed here after saving the settings. Click the View/Edit link for the corresponding domain to review or edit its Location Screening settings, or click Reset to reset the domain's settings to the default Global values.
