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Barracuda NextGen Firewall X

This Firmware Version Is End-Of-Support

As of December 1st, 2018, all new sales for Barracuda NextGen Firewall X Series products have ceased. Only renewals of software and hardware subscriptions for a maximum of one year are available for a limited time. December 1st 2019: All Barracuda Firewall X-Series sales will cease; neither new sales nor any renewals will be available. If you currently hold a maintenance and support contract, you will continue to receive our award-winning support and services until your contract expires, or until the End of Life definition as described in the End of Support and End of Life Information.

Custom Block Pages

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The Barracuda NextGen Firewall X-Series uses generic, unbranded block pages by default. You can change the HTML source of these pages to adjust the content and style to fit your needs. Each page has a predefined list of placeholder objects that are replaced on-the-fly by the X-Series Firewall when the block page is delivered to the client. Custom block pages can be used for services such as Application Control, Virus Protection, and URL Filter.

Block PageAction Triggering the Block Page
Access Block Page

Matching Block or Reset access rule with the advanced setting HTTP Block Page enabled.

Application Control Block PageConnection blocked due to the action set in the matching application policy.
Fail-Close Block Page
  • URL Filter, Virus Protection, or SSL Inspection is unavailable.
  • Configuration settings prevented the virus scanning engine from scanning the file. E.g., Block encrypted archives.
  • Internal errors.
Mail Security Virus Scan TextPlaceholder text to replace email attachments removed due to the mail security DNSBL check.
Quarantine Warning PageConnection blocked for users in ATD quarantine.
URL Filter Block PageConnection blocked due to a URL Filter category.
URL Filter Warning PageConnection blocked due to a URL Filter category.
URL Filter Override PageConnection blocked due to a URL Filter category. Users can request temporary access from an administrator.
Virus Scanner Block PageConnection/Download blocked due to detected malware.


Edit a block page

You can use HTML, CSS, and JavaScript code. Images up to 30 kB are inserted as base64 encoded HTML code.

  1. Go to FIREWALL > Settings.
  2. In the Response Messages section, click the edit icon next to the block page you want to edit. The Edit Response Message window opens.
  3. Click Browse to upload a custom image.

    For security reasons, images are stored as base64 encoded string in the HTML source.

  4. Click Open Preview to display a live preview of the message in the browser.
  5. Edit the HTML source code of the block page. Changed text immediately appears in the live preview window.
    response_68.png
  6. Click Save.

Placeholder values

Each block page has a set of placeholder variables that are processed on-the-fly by the X-Series Firewall before delivering the block page to the user.

Block PageVariableValue
Access Block Page



User Name{{USER}}
Access Rule Name{{ACCESS_RULE}}
Hostname of the Requested Website{{URL_HOST}}
Path of the Requested Website{{URL_PATH}}
Barracuda NextGen Firewall X-Series Hostname{{GATEWAY}}
Application Control Block PageUser Name{{USER}}
Access Rule Name{{ACCESS_RULE}}
Application Rule Name{{APP_RULE}}
Application Name{{APP_NAME}}
Application Category{{APP_CATEGORY}}
Application Risk Rating{{APP_RISK}}
Hostname of the Requested Website{{URL_HOST}}
Path of the Requested Website{{URL_PATH}}
Barracuda NextGen Firewall X-Series Hostname{{GATEWAY}}
Fail-Close Block Page

User Name{{USER}}
Full URL{{REQUESTED_URL}}
Block Reason{{BLOCK_REASON}}
Barracuda NextGen Firewall X-Series Hostname{{GATEWAY}}
Mail Security Virus Scan Text        User Name{{USER}}
Blocked File Name{{REQUESTED_FILE}}
Alert Type{{ALERT_TYPE}}
Threat Name{{ALERT_NAME}}
Threat Description{{ALERT_DESC}}
Barracuda NextGen Firewall X-Series Hostname{{GATEWAY}}
Quarantine Warning PageUser Name{{USER}}
Hostname of the Requested Website{{URL_HOST}}
Barracuda NextGen Firewall X-Series Hostname{{GATEWAY}}
Access Rule Name{{ACCESS_RULE}}
URL Filter Block PageUser Name{{USER}}
Access Rule Name{{ACCESS_RULE}}
Application Rule Name{{APP_RULE}}
URL Category{{URL_CATEGORY}}
Hostname of the Requested Website{{URL_HOST}}
Path of the Requested Website{{URL_PATH}}
Barracuda NextGen Firewall X-Series Hostname{{GATEWAY}}
URL Filter Warning PageUser Name{{USER}}
Access Rule Name{{ACCESS_RULE}}
Application Rule Name{{APP_RULE}}
URL Category{{URL_CATEGORY}}
Hostname of the Requested Website{{URL_HOST}}
Path of the Requested Website{{URL_PATH}}
Barracuda NextGen Firewall X-Series Hostname{{GATEWAY}}
Click-to-Continue Button (required){{CONTINUE_BUTTON}}
URL Filter Override PageUser Name{{USER}}
Hostname of the Requested Website{{URL_HOST}}
URL Category{{URL_CATEGORY}}
Barracuda NextGen Firewall X-Series Hostname{{GATEWAY}}
Application Rule Name{{APP_RULE}}
Address that permission requests should be sent to{{REQUEST_PERMISSION_COMBO_BOX}}
Permission Request Status{{REQUEST_STATUS}}
Permission Request Button{{REQUEST_PERMISSION_BUTTON}}
Virus Scanner Block PageUser Name{{USER}}
Alert Type{{ALERT_TYPE}}
Threat Name{{ALERT_NAME}}
Threat Description{{ALERT_DESC}}
Threat Description{{ALERT_DESC}}
Blocked File Name{{REQUESTED_FILE}}
Full URL{{REQUESTED_URL}}
Barracuda NextGen Firewall X-Series Hostname{{GATEWAY}}
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