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How to Block Gmail Chat using App Control Advanced

03/26/2020 50 People found this article helpful 198,374 Views

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    Description

    This article describes how to block Gmail chat using App Control Advanced.

    Resolution


    This is a scenario based article of the SonicWall App Control Advanced feature. In this scenario we describe how to block the Chat embedded within Google Webmail (Gmail) without blocking Google Webmail (Gmail).
    In addition, included here are the various methods of configuring App Policies.

    • Login to the SonicWall Management GUI.
    • Navigate to the Firewall | App Control Advanced page. In Gen5 TZ devices this page is under Security Services | App Control
    • Check the box under Enable App Control  and click on the Accept button at the top to enable App Control.
    • Under App Control Advanced | View Style select WEBMAIL under Category; select Gmail (Google Mail) under Application; select Signature under Viewed By.

    Image

    Block Google Chat

    • From the signatures listed, click on Configure under SSL Traffic 2 (Signature ID 3440)
    • In the App Control Signature window, select Enable under the Block and Log fields.
    • Click on OK to save.
      Image

    Include users to be blocked.

    To block only certain users from accessing Gmail Chat, configure the following. In this example, users not members of the selected user group will be ALLOWED.
    Image

    Exclude users from being blocked.

    To allow certain users to Gmail Chat, configure the following. In this example, users not members of the selected user group will be BLOCKED.
    Image

    Include IP Addresses to be blocked

    To block only hosts within an IP address range, configure the following. Host computers configured with an IP address outside the range will NOT be BLOCKED.
    Image

    Exclude IP Addresses from being blocked

    To allow certain hosts within an IP address range, configure the following. Host computers configured with an IP address outside the range will NOT be ALLOWED access to Gmail Chat
    Image

    Creating schedules to block Google Chat

    To configure access to Gmail Chat in Gmail webmail at scheduled intervals, configure the following.

    Navigate to the System | Schedules page. Listed here are the preconfigured schedules which can be used in App Control policies. Alternatively, you can create custom schedules with year, day and time set as per your preference.

    To create a custom schedule, click on the Add button and enter the following information with the screenshot as an example.

    Image

    In the following screenshot, Gmail Chat will be Allowed during Noon (12-14 Hours), After Hours (00-08 Hours & 15-24 Hours) and Weekends (All hours).  Outside these hours Gmail Chat will be allowed or blocked depending on the parent App Settings. If the parent Application, Gmail (Google Mail) is set to Block, then Gmail Chat will be blocked.
    Image


    How to Test

    From a host behind the SonicWall, login to Gmail (mail.google.com). After the Inbox has been loaded, Google will try to load the chat application and fail.
    Image

    Related Articles

    • Bandwidth usage and tracking in SonicWall
    • How to force an update of the Security Services Signatures from the Firewall GUI
    • Configure Guest VLAN in the TZ firewall, for guest users to access Internet only.

    Categories

    • Firewalls > TZ Series
    • Firewalls > SonicWall SuperMassive E10000 Series
    • Firewalls > SonicWall SuperMassive 9000 Series
    • Firewalls > SonicWall NSA Series

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