Barracuda Web Filter

How to Use the Barracuda Malware Removal Tool

The Barracuda Malware Removal Tool performs a comprehensive scan of your computer for any traces of spyware or other malware. This scan is very thorough and takes several minutes to complete. After the analysis is complete, you can remove all the malware and traces of malware that have been found.

The Barracuda Malware Removal Tool detects and removes many small traces, cookies, potential spyware files, and temporary files from your computer. Although these files are normally harmless, removing them can cause some websites to malfunction, and it is generally not appropriate that the Barracuda Web Filter block them at the network level. As such, the Barracuda Malware Removal Tool may identify potential files for removal from your computer that are not blocked at the network level by the Barracuda Web Filter.

For maximum security, complete removal of these files from your computer is recommended.

Use the Infection Warning Threshold field to configure whether your users are prompted to run the Barracuda Malware Removal Tool when spyware is detected on their system. By default, the Barracuda Malware Removal Tool is enabled.

Barracuda recommends that you keep the Infection Warning Threshold field set to 0 in Network Address Translation (NAT) environments because the Barracuda Web Filter uses the IP address to identify an infected system. As a result, if one system becomes infected with spyware, then all systems in the NAT environment are prompted to use the Barracuda Malware Removal Tool regardless of their infection status. This issue can occur when you deploy the Barracuda Web Filter with a pre-existing proxy server.

Enabling the Barracuda Malware Removal Tool

To enable users to run the Barracuda Malware Removal Tool:

  1. From the BLOCK/ACCEPT > Configuration page, click Yes for the Enable Removal Tool setting in the Infected Client Warning section.
  2. Clear the Infection Activity log so users are not prompted to run the Barracuda Malware Removal Tool based on old infection activity data or false positives. To clear the log, go to the BASIC > Infection Activity page and click Clear All.
  3. On the BLOCK/ACCEPT > Configuration page, enter a value greater than 0 in the Infection Warning Threshold field. When the number of infection activities on a user’s system exceeds the value of this field, the user is prompted to run the Barracuda Malware Removal Tool. The user can then select to run the tool immediately or postpone running the tool until the following day.
  4. (Optional) Create a dedicated fully qualified hostname for the Barracuda Malware Removal Tool:
    1. In the Dedicated Removal Tool Hostname field, enter a custom fully qualified hostname for the tool.
    2. Add the custom hostname to your DNS server with the following resolving IP address: 172.27.72.27.
  5. Click Save Changes.

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If you have a technical issue with the product, please contact Barracuda Networks Technical Support.