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Disable TLS 1.1 Support

01/31/2022 264 People found this article helpful 116,234 Views

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    Description

    You can  disable the support for old and insecure SSL/TLS versions to improve the security of your network.

    • The SonicWall management interface can now be accessed from a browser using SSLv3, TLS 1.0, TLS 1.1 or TLS 1.2.
    • The SonicWall SSL-VPN feature can also be accessed using these protocols.
    • The DPI-SSL feature supports all the protocols above.

    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.



    1. Login to the SonicWall management and then go to diag page through the URL:
      EXAMPLE: https://192.168.168.168/sonicui/7/m/mgmt/system/settings to https://192.168.168.168/sonicui/7/m/diag

    2. Click Internal Settings.
    3. Search for Enable TLS compatible mode and disable it if enabled.
    4. You can also disable TLS 1.1 from the diag page.

       CAUTION: TLS 1.1 is still very used on the web.

                            Image


    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.









    1. Login to the SonicWall management and then replace the word main with the word diag in the URL.

      EXAMPLE: https://192.168.168.168/main.html will become https://192.168.168.168/diag.html).

    2. Click Internal Settings.
    3. Search for Enable TLS compatible mode and disable it if enabled.
    4. You can also disable TLS 1.1 from the diag page.
       CAUTION: TLS 1.1 is still very used on the web.
      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.









    1. Login to the SonicWall management and then replace the word main with the word diag in the URL.

      EXAMPLE: https://192.168.168.168/main.html will become https://192.168.168.168/diag.html).

    2. Click Internal Settings.
    3. Search for Enable TLS compatible mode and disable it if enabled.
    4. You can also disable TLS 1.1 from the diag page.
      CAUTION: TLS 1.1 is still very used on the web.
      Image

    NOTE:  On Previous firmware versions you can find a screen like the following. Make sure Disable SSLv3 and Disable TLSv1 are checked. There is no option to disable TLSv1.1 on older firmware versions.



    Image

    Related Articles

    • ‘Error sending one-time password’ encountered when connecting to NetExtender
    • Supported SonicWall and 3rd party SFP and SFP+ modules that can be used with SonicWall NSsp series
    • Supported SonicWall and 3rd party SFP and SFP+ modules that can be used with SonicWall NSA series

    Categories

    • Firewalls > NSa Series > Firmware
    • Firewalls > TZ Series > Firmware
    • Firewalls > NSv Series > Firmware

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