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Barracuda Web Application Firewall

Scanning Your Web Application Using the Barracuda Vulnerability Manager

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Barracuda Vulnerability Manager is a web application scanner designed by Barracuda Networks to scan your web applications, and uncover security vulnerabilities such as Cross-Site-Scripting, SQL Injection, Directory Traversal, etc. in your web applications.

When you scan web applications protected by the Barracuda Web Application Firewall in active mode, the scan report generated may not find most of the vulnerabilities as they would be blocked by the Barracuda Web Application Firewall. To detect the security vulnerabilities more accurately in your web application, perform the following steps before scanning a service configured on the Barracuda Web Application Firewall:

Step 1 - Create a Trusted Hosts Group with the Barracuda Vulnerability Manager IP Addresses

  1. Go to the WEBSITES > Trusted Hosts page.
  2. In the Add New Trusted Host section, specify a name in Trusted Host Group Name and click Add. It is recommended to use “Barracuda-Vulnerability-Manager” as Trusted Host Group Name. Note: The name can include alphanumeric characters, periods (.), hyphens (-) and underscores (_). Any other special characters such as space, semicolon, asterisk, etc. are not allowed.
  3. In the Trusted Hosts section, click Add Host next to the trusted host group created in step 2.
  4. In the Create Trusted Host window, specify values for the following:
    1. Trusted Host Name – Enter a name for the trusted host.
    2. Version – Select IPv4.
    3. IP Address – Enter 64.235.153.133
    4. Mask – Enter 255.255.255.255
    5. Click Save.
  5. Repeat step 3 and 4 for the following hosts:
    1. 64.235.153.134
    2. 64.235.153.135
    3. 64.235.153.136
    4. 64.235.150.121

For more information on trusted host group, see How to Configure Trusted Hosts.

Step 2 - Associate the Trusted Hosts Group with the Service

After creating the trusted hosts group and adding hosts, associate the trusted hosts group with the service that needs to be scanned by following the steps below:

  1. Go to the BASIC > Services page.
  2. In the Services section, identify the service you want to scan and click Edit next to it.
  3. In the Service window, scroll down to the Basic Security section and do the following:
    1. Set Trusted Hosts Action to Allow.
    2. Select the trusted hosts group (i.e., Barracuda-Vulnerability-Manager) created in Step 1 - Create a Trusted Hosts Group with the Barracuda Vulnerability Manager IP Addresses from the Trusted Hosts Group drop-down list.
    3. Specify values for other parameters (if required).
    4. Click Save.

The web application is now ready to be scanned.

If you want to scan the service by keeping the Barracuda Web Application Firewall security ON, perform the following steps:

  1. Go to the BASIC > Services page.
  2. In the Services section, identify the service you want to scan and click Edit next to it.
  3. In the Service window, scroll down to the Basic Security section and do the following:
    1. Set the Trusted Hosts Action to Default.
    2. Specify values for other parameters (if required).
    3. Click Save.

 

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