How to Set up a Denial of Service Attack Blocker

Use the Denial of Service attack blocker as a precaution against unwanted intruders who slow your host machine by continuously requesting the same service.

  1. Click Preferences to access the host preferences.
  2. Under Security > IP Address Lockout, set the following Denial of Service filter options:
    Option Description
    Active Select this option to activate the attack blocker.
    Number of invalid HTTP requests allowed Specify the number of HTTP requests to allow before the offending IP address is locked out.
    Reset invalid attempt counter after After the amount of time specified in this box has elapsed, the invalid attempt count of the offending IP address will be reset to zero.
    Lock out for All attempted connections from an offending IP address will be rejected for the amount of time specified in this field.
  3. Click Apply. Your settings are applied immediately to the host.

To allow access from blocked addresses, click Unblock all.