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Barracuda Web Application Firewall

Locked Out Clients

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All IP addresses and client fingerprints of the locked-out clients are displayed on the WEBSITES > Advanced Security page, Locked Out Clients section. A client IP address/client fingerprint is blocked when a violation is detected in the request, and Follow Up Action is set to Block Client-IP/Block Client Fingerprint for that attack on the SECURITY POLICIES > Action Policy page.

Two different web interfaces are displayed based on the Lockout Settings configured under Advanced > Security Management in the ADVANCED > System Configuration page:

  • All Services - When the All Services option is selected, you can view the list of client IP address(es)/fingerprint(s) that are blocked by the Barracuda Web Application Firewall.
  • Per Service - When the Per Service option is selected, you can view the IP address(es)/fingerprint(s) of the locked out clients for each service.

The Advanced section is available only when Show Advanced Settings is set to Yes in the ADVANCED > System Configuration > Advanced Settings section.

Clearing Locked Out Clients

The client IP address(es) are blocked when a request from the client matches any of the following policy settings:

  • Follow Up Action set to Block Client-IP for an attack in the SECURITY POLICIES > Action Policy page.
  • Enable Bruteforce Prevention set to Yes in the URL policy associated with the service in the WEBSITES > Advanced Security page.
  • Session tracking Status set to On for a service in the WEBSITES > Advanced Security page.

The administrator can unblock the locked client IP address(es) using the Clear Locked Out Clients section in the WEBSITES > Advanced Security page.

Unblock a client IP address

  1. Go to the WEBSITES > Advanced Security page, Clear Locked Out Clients section.
  2. In the Client IP Address field, specify the IP address of the client that you want to unblock.
  3. Click Remove from Lockout.
  4. Alternatively, click Remove All Clients from Lockout to clear all blocked client IP addresses.