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Barracuda CloudGen Firewall
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How to Configure Custom Block Pages and Texts

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The CloudGen Firewall 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 firewall when the block page is delivered to the client. Custom block pages can be used only for services using the Forwarding or Distributed Firewall services. The HTTP proxy does not support custom block pages.

Block PageServiceAction Triggering the Block Page
Access Block PageFirewall Service

Matching Deny or Block access rule with the advanced setting Block Page for TCP 80 set to Access Block Page.

User Agent Block PageFirewall Service / User Agent FilteringConnection blocked due to the user agent policy set in the matching application rule.
Application Control Block PageFirewall Service / Application ControlConnection blocked due to the action set in the matching application rule.
ATP Scan-First Preview MailVirus Scanner, ATPFile temporarily removed for ATP scan.
File Content Block PageFirewall Service / File Content FilteringConnection blocked due to the file content policy set in the matching application rule.
Fail-Close Block PageURL Filter or Virus Scanner not availableThe Fail Close policy for the URL Filter, Virus Scanner, or TLS Inspection must be set and:
  • URL Filter or Virus Scanner service is unavailable.
  • Configuration settings prevented the virus scanning engine from scanning the file. E.g., Block encrypted archives.
  • TLS Inspection is unavailable.
  • Internal errors.
Mail Security Content Scan TextFirewall Service / Mail SecurityPlaceholder text to replace email attachments removed due to the mail security DNSBL check.
Mail Security Virus Scan TextFirewall Service / Mail SecurityPlaceholder text to replace infected email attachments removed by the virus scanner.
Mail Security Fail-Close TextFirewall Service / Mail SecurityPlaceholder text to replace infected email attachments removed due to a fail-close policy.
URL Filter Override PageFirewall Service / URL FilterConnection blocked due to a URL Filter policy with the action override.
Quarantine PageVirus Scanner, ATPPage displayed for users in ATP quarantine.
TLS Inspection Block PageFirewall Service / TLS InspectionConnection blocked due to a TLS Inspection policy.
URL Filter Block PageFirewall Service / URL FilterConnection blocked due to a URL Filter category.
URL Filter Warning PageFirewall Service / URL FilterConnection blocked due to a URL Filter category.
Virus Scanner Block PageVirus Scanner, ATPConnection/Download blocked due to detected malware.

Edit a Block Page

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

  1. Go to CONFIGURATION > Configuration Tree > Box > Assigned Services > Firewall > Response Messages.
  2. Click Lock. 
  3. In the left menu, click the block page you want to edit.

  4. In the HTML source code window, edit the source code of the block page.

    You can use CSS, JavaScript, and HTML.

  5. Click External View or Update Preview to see the changes in an external browser or the preview area.
  6. (optional) Click Insert Element to insert placeholder values or images into the block page. The available placeholder values depend on the block page.
    block01.png
  7. Click Send Changes and Activate.

Reset a Block Page to the Factory Default

You can reset the block page to its default value.

  1. Go to CONFIGURATION > Configuration Tree > Box > Assigned Services > Firewall > Response Messages.
  2. Click Lock.
  3. In the left menu, click on the block page you want to reset.
  4. Click on Restore Default.
    reset_block_page.png
  5. Click Yes.
  6. Click Send Changes and Activate.