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Blocking Online Streaming Audio Using Application Firewall

10/14/2021 34 People found this article helpful 198,590 Views

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    Description

    Application firewall scans application layer network traffic as it passes through the gateway and looks for content that matches configured keywords. When it finds a match, it performs the configured action. It can match text or binary content. When you configure application firewall, you create policies that define the type of applications to scan, the direction, the content or keywords to match. You could also optionally define the user or domain to match, and the action to perform.

    Application Firewall provides application layer bandwidth management among other things. You can use application layer bandwidth management to control the amount of network bandwidth that can be used to transfer certain file types. This allows you to discourage non-productive traffic and encourage productive traffic on your network.

    Online audio streaming can consume a large amount of bandwidth. This article illustrates a method to block such traffic using Application Firewall.

    Resolution

    Resolution for SonicOS 6.5

    This release includes significant user interface changes and many new features that are different from the SonicOS 6.2 and earlier firmware. The below resolution is for customers using SonicOS 6.5 firmware.

    Application Firewall is license based. License can be viewed under Manage | Licenses.

    Defining an Application Object

    • Login to the SonicWall Management GUI
    • Navigate to the Manage | Objects | Match objects page.
    • Click on the Add New Object button
    • In the Edit Applicable Firewall Object page, enter information as per the screenshot.
    • Click on OK to save.

    Image
    The media-type values in the above screenshot are only examples. All media=types for audio can be found here: http://en.wikipedia.org/wiki/Internet_media_type#List_of_common_media_types

    Creating an Application Firewall Policy

    Navigate to the Rules| Application Control page.
    Click on Add New Policy.
    Enter the following information and click on OK to save.

    Image


    How to Test:

    To test this scenario go to an audio streaming site and play audio content. You should see alerts similar to the ones shown below in the log. 

    Image

     

    Resolution for SonicOS 6.2 and Below

    The below resolution is for customers using SonicOS 6.2 and earlier firmware. For firewalls that are generation 6 and newer we suggest to upgrade to the latest general release of SonicOS 6.5 firmware.

    Application Firewall is license based. You can view the status of your license at the top of the Application Firewall | Policies page. You must enable Application Firewall to activate its functionality.

    Defining an Application Object

    • Login to the SonicWall Management GUI
    • Navigate to the Application Firewall | Policies page.
    • Check the box under Enable Application Firewall.
    • Navigate to the Application Firewall | Application Objects page
    • Click on the Add New Object button
    • In the Edit Applicable Firewall Object page, enter information as per the screenshot.
    • Click on OK to save.

    Image
    The media-type values in the above screenshot are only examples. All media=types for audio can be found here: http://en.wikipedia.org/wiki/Internet_media_type#List_of_common_media_types

    Creating an Application Firewall Policy

    Navigate to the Application Firewall | Policies page.
    Click on Add New Policy.
    Enter the following information and click on OK to save.

    Image


    How to Test:

    To test this scenario go to an audio streaming site and play audio content. You should see alerts similar to the ones shown below in the log. 

    Image

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    Categories

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