How to customize the block page message of pfBlockerNG

pfBlockerNG is a popular package for pfSense, a free and open-source firewall/router software, that allows administrators to manage and block incoming and outgoing traffic. Customizing the block page message for pfBlockerNG involves modifying the HTML file used to display the blocked page. This can be useful for providing a user-friendly message or additional information to users when they try to access a blocked site.

Here’s a step-by-step guide to customizing the block page message:

1. Locate the Block Page Template

The block page for pfBlockerNG is usually located in the /usr/local/www/pfblockerng directory on your pfSense system. The specific file for the block page is typically named dnsbl_default.php or similar, depending on the version and configuration.

2. Access the pfSense File System

To modify the file, you’ll need access to the pfSense file system. This can be done using:

• SSH: Securely access the pfSense console via SSH.
• Console: Directly access the pfSense console if you have physical access.
• Web GUI (Diagnostics > Edit File): You can also use the built-in file editor in the pfSense web interface.

3. Backup the Original File

Before making any changes, it is important to back up the original block page file. This can be done by copying the file to a safe location or renaming it:

4. Edit the Block Page Template

Open the block page file in a text editor. If using the command line, you can use an editor like vi or nano:

Alternatively, use the web interface’s file editor for a graphical method.

5. Customize the Content

Within the block page file, you can modify the HTML, CSS, and PHP code to customize the message. For example, you might want to change the text that informs users that the page is blocked, add your organization’s logo, or provide contact information for support.

Here’s an example of a simple customization:

Download Here

6. Save and Test the Changes

After editing the file, save the changes and test by trying to access a blocked site. Ensure that the customized message appears as expected.

7. Restore Original File if Needed

If something goes wrong, you can restore the original block page by copying the backup file back:

8. Security Considerations

Be cautious when editing PHP and HTML files. Ensure that any user input is sanitized if you’re planning to include dynamic content, as unsanitized input can lead to security vulnerabilities like cross-site scripting (XSS).

9. Backup Configuration

Regularly back up your pfSense configuration, especially before making significant changes, to quickly restore settings if needed.

By following these steps, you can effectively customize the block page message for pfBlockerNG on your pfSense firewall.