To edit the settings for blocking an attacking computer:
The Network Threat Protection component settings are displayed in the right part of the window.
If this check box is selected, on detecting a network attack attempt, the Network Threat Protection component blocks network activity from the attacking computer for the specified amount of time. This automatically protects the computer against possible future network attacks from the same address.
If this check box is cleared, on detecting a network attack attempt, the Network Threat Protection component does not enable automatic protection against possible future network attacks from the same address.