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Barracuda CloudGen Firewall

How to Configure Response Messages

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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 Page Service Action Triggering the Block Page
Access Block Page Firewall Service

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

User Agent Block Page Firewall Service / User Agent Filtering Connection blocked due to the user agent policy set in the matching application rule.
Application Control Block Page Firewall Service / Application Control Connection blocked due to the action set in the matching application rule.
ATP Scan-First Preview Mail Virus Scanner, ATP File temporarily removed for ATP scan.
File Content Block Page Firewall Service / File Content Filtering Connection blocked due to the file content policy set in the matching application rule.
Fail-Close Block Page URL Filter or Virus Scanner not available The Fail Close policy for the URL Filter, Virus Scanner, or SSL 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.
  • SSL Inspection is unavailable.
  • Internal errors.
Mail Security Content Scan Text Firewall Service / Mail Security Placeholder text to replace email attachments removed due to the mail security DNSBL check.
Mail Security Virus Scan Text Firewall Service / Mail Security Placeholder text to replace infected email attachments removed by the virus scanner.
Mail Security Fail-Close Text Firewall Service / Mail Security Placeholder text to replace infected email attachments removed due to a fail-close policy.
URL Filter Override Page Firewall Service / URL Filter Connection blocked due to a URL Filter policy with the action override.
Quarantine Page Virus Scanner, ATP Page displayed for users in ATP quarantine.
SSL Inspection Block Page Firewall Service / SSL Inspection Connection blocked due to an SSL Inspection policy.
URL Filter Block Page Firewall Service / URL Filter Connection blocked due to a URL Filter category.
URL Filter Warning Page Firewall Service / URL Filter Connection blocked due to a URL Filter category.
Virus Scanner Block Page Virus Scanner, ATP Connection/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 > Virtual Servers > your virtual server > 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 pages to its default value.

  1. Go to CONFIGURATION > Configuration Tree > Box > Virtual Servers > your virtual server > 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.
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