VIDEO: How to block web browsers like (IE, Google Chrome, Firefox, etc) using Application Firewall

06/26/2023 28 People found this article helpful 489,533 Views

Description

VIDEO: How to block web browsers like (IE, Google Chrome, Firefox, etc) using Application Firewall feature

Resolution

Resolution for SonicOS 7.X

This release includes significant user interface changes and many new features that are different from the SonicOS 6.5 and earlier firmware. The below resolution is for customers using SonicOS 7.X firmware.

Video Tutorial: Click here for the video tutorial of this topic.

Feature/Application:

This article describes how the Application Firewall feature in the Sonicwall UTM appliance is used to block Browsers. Application Firewall blocks browser like Internet Explorer (MSIE), Firefox, Netscape. An application object that allows enumeration of the various textual strings that can be used to match the name various browsers use to identify themselves. This information is contained in the User-Agent header of an HTTP GET request.

NOTE: To block HTTPS traffic you need to use the DPI-SSL feature

Procedure:

STEP 1:

Login to the Sonicwall Management interface.
Navigate to the Application Firewall > Enable "Application Firewall" > Go to Application Objects page.
Click on the Add New Object button to create an Application Object with the following properties:

Object Name: Browse
Application Object Type: Web Browser
Browser: Select the browsers to be allowed / blocked and click “Add”
Enable Negative Matching: Enabling Negative Matching for an application object and then using such object in a policy would create a policy that will perform a specified action based on absence of the content specified in the application object. In our case, we allow MSIE, Firefox,

Netscape and block Google Chrome. so, Negative Matching is "Enabled"

STEP 2:

Navigate to the Application Firewall > Policies page.
Check the Enable Application Firewall box.
Click on the Add New Policy button
In the Application Firewall Policy Settings window enter the following:

                Policy Name: Block Chrome
                Policy Type: HTTP Client
                Address Source: Any
                Address Destination: Any
                Service Source: Any
                Service Destination: HTTP
                Exclusion Address: None
                Application Object: Browser (select the Application Object created earlier)
                Action: Reset/Drop
                Users/Groups Included: All
                Users/Groups Excluded: None
                Schedule: Always on
                Enable Logging: Checked
                Log individual object content: Unchecked
                Log Redundancy Filter: Use Global Settings checked
                Connection Side: Client Side
                Direction (Basic): Both

Click on OK to save.

How to Test:

Open the chrome browser and try accessing HTTP/HTTPS site. A “This webpage is not available / the page cannot be displayed” error will be displayed on the browser.

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.

Video Tutorial: Click here for the video tutorial of this topic.

Feature/Application:

This article describes how the Application Firewall feature in the Sonicwall UTM appliance is used to block Browsers. Application Firewall blocks browser like Internet Explorer (MSIE), Firefox, Netscape. An application object that allows enumeration of the various textual strings that can be used to match the name various browsers use to identify themselves. This information is contained in the User-Agent header of an HTTP GET request.

NOTE: To block HTTPS traffic you need to use the DPI-SSL feature (available on firmware: SonicOS 5.6 and above)

Procedure:

STEP 1:

1. Login to the Sonicwall Management interface.

2. Navigate to the Application Firewall > Enable "Application Firewall" > Go to Application Objects page.

3. Click on the Add New Object button to create an Application Object with the following properties:

Object Name: Browse
Application Object Type: Web Browser
Browser: Select the browsers to be allowed / blocked and click “Add”
Enable Negative Matching: Enabling Negative Matching for an application object and then using such object in a policy would create a policy that will perform a specified action based on absence of the content specified in the application object. In our case, we allow MSIE, Firefox,

Netscape and block Google Chrome. so, Negative Matching is "Enabled"

STEP 2:

1. Navigate to the Application Firewall > Policies page.

2. Check the Enable Application Firewall box.

3. Click on the Add New Policy button

4. In the Application Firewall Policy Settings window enter the following:

                Policy Name: Block Chrome
                Policy Type: HTTP Client
                Address Source: Any
                Address Destination: Any
                Service Source: Any
                Service Destination: HTTP
                Exclusion Address: None
                Application Object: Browser (select the Application Object created earlier)
                Action: Reset/Drop
                Users/Groups Included: All
                Users/Groups Excluded: None
                Schedule: Always on
                Enable Logging: Checked
                Log individual object content: Unchecked
                Log Redundancy Filter: Use Global Settings checked
                Connection Side: Client Side
                Direction (Basic): Both

Click on OK to save.

How to Test:

Open the chrome browser and try accessing HTTP/HTTPS site. A “This webpage is not available / the page cannot be displayed” error will be displayed on the browser.

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VIDEO: How to block web browsers like (IE, Google Chrome, Firefox, etc) using Application Firewall

Description

Resolution

Resolution for SonicOS 7.X

Resolution for SonicOS 6.5

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