In Windows Explorer, Internet Explorer, or any other process which opts into the security restriction, Network Protocol Lockdown ...

In Windows Explorer, Internet Explorer, or any other process which opts into the security restriction, Network Protocol Lockdown may be implemented in any security zone in order to prevent active content obtained through restricted protocols from running in an unsafe manner, if the target URL is in that zone. Each zone may be set to either prompt the user when such content attempts to run, or to simply disallow the content in that zone.